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authorcashmere <cashmere@autistici.org>2026-09-04 09:05:24 +0200
committercashmere <cashmere@autistici.org>2026-09-04 09:05:24 +0200
commit4f49b16079b27d7ce633619e4cddfdf2bffbc952 (patch)
treec296c1e7f3c3e2f6859c6d3a1b1b208779b89679 /src/wikiformat.c
downloadrelic-4f49b16079b27d7ce633619e4cddfdf2bffbc952.tar.gz
initial commitHEADmaster
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+/*
+** Copyright (c) 2007 D. Richard Hipp
+**
+** This program is free software; you can redistribute it and/or
+** modify it under the terms of the Simplified BSD License (also
+** known as the "2-Clause License" or "FreeBSD License".)
+
+** This program is distributed in the hope that it will be useful,
+** but without any warranty; without even the implied warranty of
+** merchantability or fitness for a particular purpose.
+**
+** Author contact information:
+** drh@hwaci.com
+** http://www.hwaci.com/drh/
+**
+*******************************************************************************
+**
+** This file contains code to do formatting of wiki text.
+*/
+#include "config.h"
+#include <assert.h>
+#include "wikiformat.h"
+
+#if INTERFACE
+/*
+** Allowed wiki transformation operations
+*/
+#define WIKI_HTMLONLY 0x0001 /* HTML markup only. No wiki */
+#define WIKI_INLINE 0x0002 /* Do not surround with <p>..</p> */
+/* available for reuse: 0x0004 --- formerly WIKI_NOBLOCK */
+#define WIKI_BUTTONS 0x0008 /* Allow sub-menu buttons */
+#define WIKI_NOBADLINKS 0x0010 /* Ignore broken hyperlinks */
+#define WIKI_LINKSONLY 0x0020 /* No markup. Only decorate links */
+#define WIKI_NEWLINE 0x0040 /* Honor \n - break lines at each \n */
+#define WIKI_MARKDOWNLINKS 0x0080 /* Resolve hyperlinks as in markdown */
+#define WIKI_SAFE 0x0100 /* Make the result safe for embedding */
+#define WIKI_TARGET_BLANK 0x0200 /* Hyperlinks go to a new window */
+#define WIKI_NOBRACKET 0x0400 /* Omit extra [..] around hyperlinks */
+#define WIKI_ADMIN 0x0800 /* Ignore g.perm.Hyperlink */
+#define WIKI_MARK 0x1000 /* Add <mark>..</mark> around problems */
+
+/*
+** Return values from wiki_convert
+*/
+#define RENDER_LINK 0x0001 /* One or more hyperlinks rendered */
+#define RENDER_ENTITY 0x0002 /* One or more HTML entities (ex: &lt;) */
+#define RENDER_TAG 0x0004 /* One or more HTML tags */
+#define RENDER_BLOCKTAG 0x0008 /* One or more HTML block tags (ex: <p>) */
+#define RENDER_BLOCK 0x0010 /* Block wiki (paragraphs, etc.) */
+#define RENDER_MARK 0x0020 /* Output contains <mark>..</mark> */
+#define RENDER_BADLINK 0x0100 /* Bad hyperlink syntax seen */
+#define RENDER_BADTARGET 0x0200 /* Bad hyperlink target */
+#define RENDER_BADTAG 0x0400 /* Bad HTML tag or tag syntax */
+#define RENDER_BADENTITY 0x0800 /* Bad HTML entity syntax */
+#define RENDER_BADHTML 0x1000 /* Bad HTML seen */
+#define RENDER_ERROR 0x8000 /* Some other kind of error */
+/* Composite values: */
+#define RENDER_ANYERROR 0x9f00 /* Mask for any kind of error */
+
+#endif /* INTERFACE */
+
+
+/*
+** These are the only markup attributes allowed.
+*/
+enum allowed_attr_t {
+ ATTR_ALIGN = 1,
+ ATTR_ALT,
+ ATTR_BGCOLOR,
+ ATTR_BORDER,
+ ATTR_CELLPADDING,
+ ATTR_CELLSPACING,
+ ATTR_CITE,
+ ATTR_CLASS,
+ ATTR_CLEAR,
+ ATTR_COLOR,
+ ATTR_COLSPAN,
+ ATTR_COMPACT,
+ ATTR_DATETIME,
+ ATTR_FACE,
+ ATTR_FOR,
+ ATTR_HEIGHT,
+ ATTR_HIGH,
+ ATTR_HREF,
+ ATTR_HSPACE,
+ ATTR_ID,
+ ATTR_LINKS,
+ ATTR_LOW,
+ ATTR_MAX,
+ ATTR_MEDIA,
+ ATTR_MIN,
+ ATTR_NAME,
+ ATTR_OPEN,
+ ATTR_OPTIMUM,
+ ATTR_ROWSPAN,
+ ATTR_SIZE,
+ ATTR_SIZES,
+ ATTR_SRC,
+ ATTR_SRCSET,
+ ATTR_START,
+ ATTR_STYLE,
+ ATTR_TARGET,
+ ATTR_TITLE,
+ ATTR_TYPE,
+ ATTR_VALIGN,
+ ATTR_VALUE,
+ ATTR_VSPACE,
+ ATTR_WIDTH
+};
+
+typedef uint64_t amsk_t;
+#define AMSK_ALIGN ((amsk_t)1 << 0)
+#define AMSK_ALT ((amsk_t)1 << 1)
+#define AMSK_BGCOLOR ((amsk_t)1 << 2)
+#define AMSK_BORDER ((amsk_t)1 << 3)
+#define AMSK_CELLPADDING ((amsk_t)1 << 4)
+#define AMSK_CELLSPACING ((amsk_t)1 << 5)
+#define AMSK_CLASS ((amsk_t)1 << 6)
+#define AMSK_CLEAR ((amsk_t)1 << 7)
+#define AMSK_COLOR ((amsk_t)1 << 8)
+#define AMSK_COLSPAN ((amsk_t)1 << 9)
+#define AMSK_COMPACT ((amsk_t)1 << 10)
+#define AMSK_FACE ((amsk_t)1 << 11)
+#define AMSK_HEIGHT ((amsk_t)1 << 12)
+#define AMSK_HREF ((amsk_t)1 << 13)
+#define AMSK_HSPACE ((amsk_t)1 << 14)
+#define AMSK_ID ((amsk_t)1 << 15)
+#define AMSK_LINKS ((amsk_t)1 << 16)
+#define AMSK_NAME ((amsk_t)1 << 17)
+#define AMSK_OPEN ((amsk_t)1 << 18)
+#define AMSK_ROWSPAN ((amsk_t)1 << 19)
+#define AMSK_SIZE ((amsk_t)1 << 20)
+#define AMSK_SRC ((amsk_t)1 << 21)
+#define AMSK_START ((amsk_t)1 << 22)
+#define AMSK_STYLE ((amsk_t)1 << 23)
+#define AMSK_TARGET ((amsk_t)1 << 24)
+#define AMSK_TITLE ((amsk_t)1 << 25)
+#define AMSK_TYPE ((amsk_t)1 << 26)
+#define AMSK_VALIGN ((amsk_t)1 << 27)
+#define AMSK_VALUE ((amsk_t)1 << 28)
+#define AMSK_VSPACE ((amsk_t)1 << 29)
+#define AMSK_WIDTH ((amsk_t)1 << 30)
+#define AMSK_CITE ((amsk_t)1 << 31)
+#define AMSK_DATETIME ((amsk_t)1 << 32)
+
+static const struct AllowedAttribute {
+ const char *zName;
+ amsk_t iMask;
+} aAttribute[] = {
+ /* These indexes MUST line up with their
+ corresponding allowed_attr_t enum values.
+ */
+ { 0, 0 },
+ { "align", AMSK_ALIGN },
+ { "alt", AMSK_ALT },
+ { "bgcolor", AMSK_BGCOLOR },
+ { "border", AMSK_BORDER },
+ { "cellpadding", AMSK_CELLPADDING },
+ { "cellspacing", AMSK_CELLSPACING },
+ { "cite", AMSK_CITE },
+ { "class", AMSK_CLASS },
+ { "clear", AMSK_CLEAR },
+ { "color", AMSK_COLOR },
+ { "colspan", AMSK_COLSPAN },
+ { "compact", AMSK_COMPACT },
+ { "datetime", AMSK_DATETIME },
+ { "face", AMSK_FACE },
+ { "for", 0 },
+ { "height", AMSK_HEIGHT },
+ { "high", 0 },
+ { "href", AMSK_HREF },
+ { "hspace", AMSK_HSPACE },
+ { "id", AMSK_ID },
+ { "links", AMSK_LINKS },
+ { "low", 0 },
+ { "max", 0 },
+ { "media", 0 },
+ { "min", 0 },
+ { "name", AMSK_NAME },
+ { "open", AMSK_OPEN },
+ { "optimum", 0 },
+ { "rowspan", AMSK_ROWSPAN },
+ { "size", AMSK_SIZE },
+ { "sizes", 0 },
+ { "src", AMSK_SRC },
+ { "srcset", 0 },
+ { "start", AMSK_START },
+ { "style", AMSK_STYLE },
+ { "target", AMSK_TARGET },
+ { "title", AMSK_TITLE },
+ { "type", AMSK_TYPE },
+ { "valign", AMSK_VALIGN },
+ { "value", AMSK_VALUE },
+ { "vspace", AMSK_VSPACE },
+ { "width", AMSK_WIDTH },
+};
+
+/*
+** Use binary search to locate a tag in the aAttribute[] table.
+*/
+static int findAttr(const char *z){
+ int i, c, first, last;
+ first = 1;
+ last = count(aAttribute) - 1;
+ while( first<=last ){
+ i = (first+last)/2;
+ c = fossil_strcmp(aAttribute[i].zName, z);
+ if( c==0 ){
+ return i;
+ }else if( c<0 ){
+ first = i+1;
+ }else{
+ last = i-1;
+ }
+ }
+ return 0;
+}
+
+
+
+/*
+** Allowed markup.
+**
+** Except for MARKUP_INVALID, this must all be in alphabetical order
+** and in numerical sequence. The first markup type must be zero.
+** The value for MARKUP_XYZ must correspond to the <xyz> entry
+** in aMarkup[].
+*/
+enum markup_t {
+ MARKUP_INVALID = 0,
+ MARKUP_A,
+ MARKUP_ABBR,
+ MARKUP_ADDRESS,
+ MARKUP_HTML5_ARTICLE,
+ MARKUP_HTML5_ASIDE,
+ MARKUP_B,
+ MARKUP_BIG,
+ MARKUP_BLOCKQUOTE,
+ MARKUP_BR,
+ MARKUP_CAPTION,
+ MARKUP_CENTER,
+ MARKUP_CITE,
+ MARKUP_CODE,
+ MARKUP_COL,
+ MARKUP_COLGROUP,
+ MARKUP_DD,
+ MARKUP_DEL,
+ MARKUP_DETAILS,
+ MARKUP_DFN,
+ MARKUP_DIV,
+ MARKUP_DL,
+ MARKUP_DT,
+ MARKUP_EM,
+ MARKUP_FIGCAPTION,
+ MARKUP_FIGURE,
+ MARKUP_FONT,
+ MARKUP_HTML5_FOOTER,
+ MARKUP_H1,
+ MARKUP_H2,
+ MARKUP_H3,
+ MARKUP_H4,
+ MARKUP_H5,
+ MARKUP_H6,
+ MARKUP_HTML5_HEADER,
+ MARKUP_HR,
+ MARKUP_I,
+ MARKUP_IMG,
+ MARKUP_INS,
+ MARKUP_KBD,
+ MARKUP_LABEL,
+ MARKUP_LI,
+ MARKUP_MARK,
+ MARKUP_METER,
+ MARKUP_HTML5_NAV,
+ MARKUP_NOBR,
+ MARKUP_NOWIKI,
+ MARKUP_OL,
+ MARKUP_P,
+ MARKUP_PICTURE,
+ MARKUP_PRE,
+ MARKUP_PROGRESS,
+ MARKUP_Q,
+ MARKUP_S,
+ MARKUP_SAMP,
+ MARKUP_HTML5_SECTION,
+ MARKUP_SMALL,
+ MARKUP_SOURCE,
+ MARKUP_SPAN,
+ MARKUP_STRIKE,
+ MARKUP_STRONG,
+ MARKUP_SUB,
+ MARKUP_SUMMARY,
+ MARKUP_SUP,
+ MARKUP_TABLE,
+ MARKUP_TBODY,
+ MARKUP_TD,
+ MARKUP_TFOOT,
+ MARKUP_TH,
+ MARKUP_THEAD,
+ MARKUP_TIME,
+ MARKUP_TITLE,
+ MARKUP_TR,
+ MARKUP_TT,
+ MARKUP_U,
+ MARKUP_UL,
+ MARKUP_VAR,
+ MARKUP_VERBATIM,
+ MARKUP_WBR
+};
+
+/*
+** The various markup is divided into the following types:
+*/
+#define MUTYPE_SINGLE 0x0001 /* <img>, <br>, or <hr> */
+#define MUTYPE_BLOCK 0x0002 /* Forms a new paragraph. ex: <p>, <h2> */
+#define MUTYPE_FONT 0x0004 /* Font changes. ex: <b>, <font>, <sub> */
+#define MUTYPE_LIST 0x0010 /* Lists. <ol>, <ul>, or <dl> */
+#define MUTYPE_LI 0x0020 /* List items. <li>, <dd>, <dt> */
+#define MUTYPE_TABLE 0x0040 /* <table> */
+#define MUTYPE_TR 0x0080 /* <tr> */
+#define MUTYPE_TD 0x0100 /* <td> or <th> */
+#define MUTYPE_SPECIAL 0x0200 /* <nowiki> or <verbatim> */
+#define MUTYPE_HYPERLINK 0x0400 /* <a> */
+
+/* MUTYPE values for elements that require strictly nested end-tags */
+#define MUTYPE_Nested 0x0656
+
+/*
+** These markup types must have an end tag.
+*/
+#define MUTYPE_STACK (MUTYPE_BLOCK | MUTYPE_FONT | MUTYPE_LIST | MUTYPE_TABLE)
+
+/*
+** This markup types are allowed for "inline" text.
+*/
+#define MUTYPE_INLINE (MUTYPE_FONT | MUTYPE_HYPERLINK)
+
+static const struct AllowedMarkup {
+ const char *zName; /* Name of the markup */
+ char iCode; /* The MARKUP_* code */
+ short int iType; /* The MUTYPE_* code */
+ amsk_t allowedAttr; /* Allowed attributes on this markup */
+} aMarkup[] = {
+ { 0, MARKUP_INVALID, 0, 0 },
+ { "a", MARKUP_A, MUTYPE_HYPERLINK,
+ AMSK_HREF|AMSK_NAME|AMSK_CLASS|AMSK_TARGET|AMSK_STYLE|
+ AMSK_TITLE},
+ { "abbr", MARKUP_ABBR, MUTYPE_FONT,
+ AMSK_ID|AMSK_CLASS|AMSK_STYLE|AMSK_TITLE },
+ { "address", MARKUP_ADDRESS, MUTYPE_BLOCK, AMSK_STYLE },
+ { "article", MARKUP_HTML5_ARTICLE, MUTYPE_BLOCK,
+ AMSK_ID|AMSK_CLASS|AMSK_STYLE },
+ { "aside", MARKUP_HTML5_ASIDE, MUTYPE_BLOCK,
+ AMSK_ID|AMSK_CLASS|AMSK_STYLE },
+ { "b", MARKUP_B, MUTYPE_FONT, AMSK_STYLE },
+ { "big", MARKUP_BIG, MUTYPE_FONT, AMSK_STYLE },
+ { "blockquote", MARKUP_BLOCKQUOTE, MUTYPE_BLOCK, AMSK_STYLE },
+ { "br", MARKUP_BR, MUTYPE_SINGLE, AMSK_CLEAR },
+ { "caption", MARKUP_CAPTION, MUTYPE_BLOCK,
+ AMSK_ID|AMSK_CLASS|AMSK_STYLE },
+ { "center", MARKUP_CENTER, MUTYPE_BLOCK, AMSK_STYLE },
+ { "cite", MARKUP_CITE, MUTYPE_FONT, AMSK_STYLE },
+ { "code", MARKUP_CODE, MUTYPE_FONT, AMSK_STYLE },
+ { "col", MARKUP_COL, MUTYPE_SINGLE,
+ AMSK_ALIGN|AMSK_CLASS|AMSK_COLSPAN|AMSK_WIDTH|AMSK_STYLE },
+ { "colgroup", MARKUP_COLGROUP, MUTYPE_BLOCK,
+ AMSK_ALIGN|AMSK_CLASS|AMSK_COLSPAN|AMSK_WIDTH|AMSK_STYLE},
+ { "dd", MARKUP_DD, MUTYPE_LI, AMSK_STYLE },
+ { "del", MARKUP_DEL, MUTYPE_FONT, AMSK_STYLE },
+ { "details", MARKUP_DETAILS, MUTYPE_BLOCK,
+ AMSK_ID|AMSK_CLASS|AMSK_STYLE|AMSK_OPEN },
+ { "dfn", MARKUP_DFN, MUTYPE_FONT, AMSK_STYLE },
+ { "div", MARKUP_DIV, MUTYPE_BLOCK,
+ AMSK_ID|AMSK_CLASS|AMSK_STYLE },
+ { "dl", MARKUP_DL, MUTYPE_LIST,
+ AMSK_COMPACT|AMSK_STYLE },
+ { "dt", MARKUP_DT, MUTYPE_LI, AMSK_STYLE },
+ { "em", MARKUP_EM, MUTYPE_FONT, AMSK_STYLE },
+ { "figcaption", MARKUP_FIGCAPTION, MUTYPE_BLOCK,
+ AMSK_ID|AMSK_CLASS|AMSK_STYLE },
+ { "figure", MARKUP_FIGURE, MUTYPE_BLOCK,
+ AMSK_ID|AMSK_CLASS|AMSK_STYLE },
+ { "font", MARKUP_FONT, MUTYPE_FONT,
+ AMSK_COLOR|AMSK_FACE|AMSK_SIZE|AMSK_STYLE },
+ { "footer", MARKUP_HTML5_FOOTER, MUTYPE_BLOCK,
+ AMSK_ID|AMSK_CLASS|AMSK_STYLE },
+ { "h1", MARKUP_H1, MUTYPE_BLOCK,
+ AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE },
+ { "h2", MARKUP_H2, MUTYPE_BLOCK,
+ AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE },
+ { "h3", MARKUP_H3, MUTYPE_BLOCK,
+ AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE },
+ { "h4", MARKUP_H4, MUTYPE_BLOCK,
+ AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE },
+ { "h5", MARKUP_H5, MUTYPE_BLOCK,
+ AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE },
+ { "h6", MARKUP_H6, MUTYPE_BLOCK,
+ AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE },
+ { "header", MARKUP_HTML5_HEADER, MUTYPE_BLOCK,
+ AMSK_ID|AMSK_CLASS|AMSK_STYLE },
+ { "hr", MARKUP_HR, MUTYPE_SINGLE,
+ AMSK_ALIGN|AMSK_COLOR|AMSK_SIZE|AMSK_WIDTH|
+ AMSK_STYLE|AMSK_CLASS },
+ { "i", MARKUP_I, MUTYPE_FONT, AMSK_STYLE },
+ { "img", MARKUP_IMG, MUTYPE_SINGLE,
+ AMSK_ALIGN|AMSK_ALT|AMSK_BORDER|AMSK_HEIGHT|
+ AMSK_HSPACE|AMSK_SRC|AMSK_VSPACE|AMSK_WIDTH|AMSK_STYLE },
+ { "ins", MARKUP_INS, MUTYPE_FONT, AMSK_STYLE },
+ { "kbd", MARKUP_KBD, MUTYPE_FONT, AMSK_STYLE },
+ { "label", MARKUP_LABEL, MUTYPE_FONT,
+ AMSK_ID|AMSK_CLASS|AMSK_STYLE },
+ { "li", MARKUP_LI, MUTYPE_LI,
+ AMSK_TYPE|AMSK_VALUE|AMSK_STYLE },
+ { "mark", MARKUP_MARK, MUTYPE_FONT,
+ AMSK_ID|AMSK_CLASS|AMSK_STYLE },
+ { "meter", MARKUP_METER, MUTYPE_FONT,
+ AMSK_ID|AMSK_CLASS|AMSK_STYLE|AMSK_VALUE },
+ { "nav", MARKUP_HTML5_NAV, MUTYPE_BLOCK,
+ AMSK_ID|AMSK_CLASS|AMSK_STYLE },
+ { "nobr", MARKUP_NOBR, MUTYPE_FONT, 0 },
+ { "nowiki", MARKUP_NOWIKI, MUTYPE_SPECIAL, 0 },
+ { "ol", MARKUP_OL, MUTYPE_LIST,
+ AMSK_START|AMSK_TYPE|AMSK_COMPACT|AMSK_STYLE },
+ { "p", MARKUP_P, MUTYPE_BLOCK,
+ AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE },
+ { "picture", MARKUP_PICTURE, MUTYPE_BLOCK,
+ AMSK_ID|AMSK_CLASS|AMSK_STYLE },
+ { "pre", MARKUP_PRE, MUTYPE_BLOCK, AMSK_STYLE },
+ { "progress", MARKUP_PROGRESS, MUTYPE_FONT,
+ AMSK_ID|AMSK_CLASS|AMSK_STYLE|AMSK_VALUE },
+ { "q", MARKUP_Q, MUTYPE_FONT,
+ AMSK_CLASS|AMSK_STYLE|AMSK_CITE },
+ { "s", MARKUP_S, MUTYPE_FONT, AMSK_STYLE },
+ { "samp", MARKUP_SAMP, MUTYPE_FONT, AMSK_STYLE },
+ { "section", MARKUP_HTML5_SECTION, MUTYPE_BLOCK,
+ AMSK_ID|AMSK_CLASS|AMSK_STYLE },
+ { "small", MARKUP_SMALL, MUTYPE_FONT, AMSK_STYLE },
+ { "source", MARKUP_SOURCE, MUTYPE_SINGLE,
+ AMSK_TYPE|AMSK_ID|AMSK_CLASS|AMSK_STYLE },
+ { "span", MARKUP_SPAN, MUTYPE_BLOCK,
+ AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE },
+ { "strike", MARKUP_STRIKE, MUTYPE_FONT, AMSK_STYLE },
+ { "strong", MARKUP_STRONG, MUTYPE_FONT, AMSK_STYLE },
+ { "sub", MARKUP_SUB, MUTYPE_FONT, AMSK_STYLE },
+ { "summary", MARKUP_SUMMARY, MUTYPE_BLOCK,
+ AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE },
+ { "sup", MARKUP_SUP, MUTYPE_FONT, AMSK_STYLE },
+ { "table", MARKUP_TABLE, MUTYPE_TABLE,
+ AMSK_ALIGN|AMSK_BGCOLOR|AMSK_BORDER|AMSK_CELLPADDING|
+ AMSK_CELLSPACING|AMSK_HSPACE|AMSK_VSPACE|AMSK_CLASS|
+ AMSK_STYLE },
+ { "tbody", MARKUP_TBODY, MUTYPE_BLOCK,
+ AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE },
+ { "td", MARKUP_TD, MUTYPE_TD,
+ AMSK_ALIGN|AMSK_BGCOLOR|AMSK_COLSPAN|
+ AMSK_ROWSPAN|AMSK_VALIGN|AMSK_CLASS|AMSK_STYLE },
+ { "tfoot", MARKUP_TFOOT, MUTYPE_BLOCK,
+ AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE },
+ { "th", MARKUP_TH, MUTYPE_TD,
+ AMSK_ALIGN|AMSK_BGCOLOR|AMSK_COLSPAN|
+ AMSK_ROWSPAN|AMSK_VALIGN|AMSK_CLASS|AMSK_STYLE },
+ { "thead", MARKUP_THEAD, MUTYPE_BLOCK,
+ AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE },
+ { "time", MARKUP_TIME, MUTYPE_FONT,
+ AMSK_DATETIME|AMSK_ID|AMSK_CLASS|AMSK_STYLE|AMSK_TITLE },
+ { "title", MARKUP_TITLE, MUTYPE_BLOCK, 0 },
+ { "tr", MARKUP_TR, MUTYPE_TR,
+ AMSK_ALIGN|AMSK_BGCOLOR|AMSK_VALIGN|AMSK_CLASS|AMSK_STYLE },
+ { "tt", MARKUP_TT, MUTYPE_FONT, AMSK_STYLE },
+ { "u", MARKUP_U, MUTYPE_FONT, AMSK_STYLE },
+ { "ul", MARKUP_UL, MUTYPE_LIST,
+ AMSK_TYPE|AMSK_COMPACT|AMSK_STYLE },
+ { "var", MARKUP_VAR, MUTYPE_FONT, AMSK_STYLE },
+ { "verbatim", MARKUP_VERBATIM, MUTYPE_SPECIAL,
+ AMSK_ID|AMSK_TYPE },
+ { "wbr", MARKUP_WBR, MUTYPE_SINGLE, 0 },
+};
+
+void show_allowed_wiki_markup( void ){
+ int i; /* loop over allowedAttr */
+ for( i=1 ; i<=count(aMarkup) - 1 ; i++ ){
+ @ &lt;%s(aMarkup[i].zName)&gt;
+ }
+}
+
+/*
+** Use binary search to locate a tag in the aMarkup[] table.
+*/
+static int findTag(const char *z){
+ int i, c, first, last;
+ first = 1;
+ last = count(aMarkup) - 1;
+ while( first<=last ){
+ i = (first+last)/2;
+ c = fossil_strcmp(aMarkup[i].zName, z);
+ if( c==0 ){
+ assert( aMarkup[i].iCode==i );
+ return i;
+ }else if( c<0 ){
+ first = i+1;
+ }else{
+ last = i-1;
+ }
+ }
+ return MARKUP_INVALID;
+}
+
+/*
+** Token types
+*/
+#define TOKEN_MARKUP 1 /* <...> */
+#define TOKEN_CHARACTER 2 /* "&" or "<" not part of markup */
+#define TOKEN_LINK 3 /* [...] */
+#define TOKEN_PARAGRAPH 4 /* blank lines */
+#define TOKEN_NEWLINE 5 /* A single "\n" */
+#define TOKEN_BUL_LI 6 /* " * " */
+#define TOKEN_NUM_LI 7 /* " # " */
+#define TOKEN_ENUM 8 /* " \(?\d+[.)]? " */
+#define TOKEN_INDENT 9 /* " " */
+#define TOKEN_RAW 10 /* Output exactly (used when wiki-use-html==1) */
+#define TOKEN_TEXT 11 /* None of the above */
+
+/*
+** State flags. Save the lower 16 bits for the WIKI_* flags.
+*/
+#define AT_NEWLINE 0x0010000 /* At start of a line */
+#define AT_PARAGRAPH 0x0020000 /* At start of a paragraph */
+#define ALLOW_WIKI 0x0040000 /* Allow wiki markup */
+#define ALLOW_LINKS 0x0080000 /* Allow [...] hyperlinks */
+#define FONT_MARKUP_ONLY 0x0100000 /* Only allow MUTYPE_FONT markup */
+#define IN_LIST 0x0200000 /* Within wiki <ul> or <ol> */
+
+/*
+** Current state of the rendering engine
+*/
+typedef struct Renderer Renderer;
+struct Renderer {
+ Blob *pOut; /* Output appended to this blob */
+ int state; /* Flag that govern rendering */
+ int mRender; /* Mask of RENDER_* values to return */
+ unsigned renderFlags; /* Flags from the client */
+ int wikiList; /* Current wiki list type */
+ int inVerbatim; /* True in <verbatim> mode */
+ int preVerbState; /* Value of state prior to verbatim */
+ int wantAutoParagraph; /* True if a <p> is desired */
+ int inAutoParagraph; /* True if within an automatic paragraph */
+ int pikchrHtmlFlags; /* Flags for pikchr_to_html() */
+ const char *zVerbatimId; /* The id= attribute of <verbatim> */
+ int nStack; /* Number of elements on the stack */
+ int nAlloc; /* Space allocated for aStack */
+ struct sStack {
+ short iCode; /* Markup code */
+ short allowWiki; /* ALLOW_WIKI if wiki allowed before tag */
+ const char *zId; /* ID attribute or NULL */
+ } *aStack;
+};
+
+/*
+** Return TRUE if HTML should be used as the sole markup language for wiki.
+**
+** On first invocation, this routine consults the "wiki-use-html" setting.
+** It caches the result for subsequent invocations, under the assumption
+** that the setting will not change.
+*/
+static int wikiUsesHtml(void){
+ static int r = -1;
+ if( r<0 ) r = db_get_boolean("wiki-use-html", 0);
+ return r;
+}
+
+/*
+** z points to a "<" character. Check to see if this is the start of
+** a valid markup. If it is, return the total number of characters in
+** the markup including the initial "<" and the terminating ">". If
+** it is not well-formed markup, return 0.
+*/
+int html_tag_length(const char *z){
+ int n = 1;
+ int inparen = 0;
+ int c;
+ if( z[n]=='/' ){ n++; }
+ if( !fossil_isalpha(z[n]) ) return 0;
+ while( fossil_isalnum(z[n]) || z[n]=='-' ){ n++; }
+ c = z[n];
+ if( c=='/' && z[n+1]=='>' ){ return n+2; }
+ if( c!='>' && !fossil_isspace(c) ) return 0;
+ while( (c = z[n])!=0 && (c!='>' || inparen) ){
+ if( c==inparen ){
+ inparen = 0;
+ }else if( inparen==0 && (c=='"' || c=='\'') ){
+ inparen = c;
+ }
+ n++;
+ }
+ if( z[n]!='>' ) return 0;
+ return n+1;
+}
+
+/*
+** z points to a "\n" character. Check to see if this newline is
+** followed by one or more blank lines. If it is, return the number
+** of characters through the closing "\n". If not, return 0.
+*/
+static int paragraphBreakLength(const char *z){
+ int i, n;
+ int nNewline = 1;
+ for(i=1, n=0; fossil_isspace(z[i]); i++){
+ if( z[i]=='\n' ){
+ nNewline++;
+ n = i;
+ }
+ }
+ if( nNewline>=2 ){
+ return n+1;
+ }else{
+ return 0;
+ }
+}
+
+/*
+** Return the number of characters until the next "interesting"
+** characters.
+**
+** Interesting characters are:
+**
+** <
+** &
+** \n
+** [
+**
+** The "[" is only considered if flags contain ALLOW_LINKS or ALLOW_WIKI.
+** The "\n" is only considered interesting if the flags contains ALLOW_WIKI.
+*/
+static int textLength(const char *z, int flags){
+ const char *zReject;
+ if( flags & ALLOW_WIKI ){
+ zReject = "<&[\n";
+ }else if( flags & ALLOW_LINKS ){
+ zReject = "<&[";
+ }else{
+ zReject = "<&";
+ }
+ return strcspn(z, zReject);
+}
+
+/*
+** Return true if z[] begins with an HTML character element.
+*/
+static int isElement(const char *z){
+ int i;
+ assert( z[0]=='&' );
+ if( z[1]=='#' ){
+ for(i=2; fossil_isdigit(z[i]); i++){}
+ return i>2 && z[i]==';';
+ }else{
+ for(i=1; fossil_isalpha(z[i]); i++){}
+ return i>1 && z[i]==';';
+ }
+}
+
+/*
+** Check to see if the z[] string is the beginning of a wiki list item.
+** If it is, return the length of the bullet text. Otherwise return 0.
+*/
+static int listItemLength(const char *z, const char listChar){
+ int i, n;
+ n = 0;
+ i = 0;
+ while( z[n]==' ' || z[n]=='\t' ){
+ if( z[n]=='\t' ) i++;
+ i++;
+ n++;
+ }
+ if( i<2 || z[n]!=listChar ) return 0;
+ n++;
+ i = 0;
+ while( z[n]==' ' || z[n]=='\t' ){
+ if( z[n]=='\t' ) i++;
+ i++;
+ n++;
+ }
+ if( i<2 || fossil_isspace(z[n]) ) return 0;
+ return n;
+}
+
+/*
+** Check to see if the z[] string is the beginning of an enumeration value.
+** If it is, return the length of the bullet text. Otherwise return 0.
+**
+** Syntax:
+** * a tab or two or more spaces
+** * one or more digits
+** * optional "."
+** * another tab or two ore more spaces.
+**
+*/
+static int enumLength(const char *z){
+ int i, n;
+ n = 0;
+ i = 0;
+ while( z[n]==' ' || z[n]=='\t' ){
+ if( z[n]=='\t' ) i++;
+ i++;
+ n++;
+ }
+ if( i<2 ) return 0;
+ for(i=0; fossil_isdigit(z[n]); i++, n++){}
+ if( i==0 ) return 0;
+ if( z[n]=='.' ){
+ n++;
+ }
+ i = 0;
+ while( z[n]==' ' || z[n]=='\t' ){
+ if( z[n]=='\t' ) i++;
+ i++;
+ n++;
+ }
+ if( i<2 || fossil_isspace(z[n]) ) return 0;
+ return n;
+}
+
+/*
+** Check to see if the z[] string is the beginning of an indented
+** paragraph. If it is, return the length of the indent. Otherwise
+** return 0.
+*/
+static int indentLength(const char *z){
+ int i, n;
+ n = 0;
+ i = 0;
+ while( z[n]==' ' || z[n]=='\t' ){
+ if( z[n]=='\t' ) i++;
+ i++;
+ n++;
+ }
+ if( i<2 || fossil_isspace(z[n]) ) return 0;
+ return n;
+}
+
+/*
+** Check to see if the z[] string is a wiki hyperlink. If it is,
+** return the length of the hyperlink. Otherwise return 0.
+*/
+static int linkLength(const char *z){
+ int n;
+ assert( z[0]=='[' );
+ for(n=0; z[n] && z[n]!=']'; n++){}
+ if( z[n]==']' ){
+ return n+1;
+ }else{
+ return 0;
+ }
+}
+
+/*
+** Get the next wiki token.
+**
+** z points to the start of a token. Return the number of
+** characters in that token. Write the token type into *pTokenType.
+*/
+static int nextWikiToken(const char *z, Renderer *p, int *pTokenType){
+ int n;
+ if( z[0]=='<' ){
+ n = html_tag_length(z);
+ if( n>0 ){
+ p->mRender |= RENDER_TAG;
+ *pTokenType = TOKEN_MARKUP;
+ return n;
+ }else{
+ p->mRender |= RENDER_BADTAG;
+ *pTokenType = TOKEN_CHARACTER;
+ return 1;
+ }
+ }
+ if( z[0]=='&' ){
+ p->mRender |= RENDER_ENTITY;
+ if( (p->inVerbatim || !isElement(z)) ){
+ *pTokenType = TOKEN_CHARACTER;
+ return 1;
+ }
+ }
+ if( (p->state & ALLOW_WIKI)!=0 ){
+ if( z[0]=='\n' ){
+ n = paragraphBreakLength(z);
+ if( n>0 ){
+ *pTokenType = TOKEN_PARAGRAPH;
+ return n;
+ }else{
+ *pTokenType = TOKEN_NEWLINE;
+ return 1;
+ }
+ }
+ if( (p->state & AT_NEWLINE)!=0 && fossil_isspace(z[0]) ){
+ n = listItemLength(z, '*');
+ if( n>0 ){
+ *pTokenType = TOKEN_BUL_LI;
+ return n;
+ }
+ n = listItemLength(z, '#');
+ if( n>0 ){
+ *pTokenType = TOKEN_NUM_LI;
+ return n;
+ }
+ n = enumLength(z);
+ if( n>0 ){
+ *pTokenType = TOKEN_ENUM;
+ return n;
+ }
+ }
+ if( (p->state & AT_PARAGRAPH)!=0 && fossil_isspace(z[0]) ){
+ n = indentLength(z);
+ if( n>0 ){
+ *pTokenType = TOKEN_INDENT;
+ return n;
+ }
+ }
+ if( z[0]=='[' ){
+ if( (n = linkLength(z))>0 ){
+ *pTokenType = TOKEN_LINK;
+ return n;
+ }else if( p->state & WIKI_MARK ){
+ blob_append_string(p->pOut, "<mark>");
+ p->mRender |= RENDER_BADLINK|RENDER_MARK;
+ }else{
+ p->mRender |= RENDER_BADLINK;
+ }
+ }
+ }else if( (p->state & ALLOW_LINKS)!=0 && z[0]=='[' ){
+ if( (n = linkLength(z))>0 ){
+ *pTokenType = TOKEN_LINK;
+ return n;
+ }else if( p->state & WIKI_MARK ){
+ blob_append_string(p->pOut, "<mark>");
+ p->mRender |= RENDER_BADLINK|RENDER_MARK;
+ }else{
+ p->mRender |= RENDER_BADLINK;
+ }
+ }
+ *pTokenType = TOKEN_TEXT;
+ return 1 + textLength(z+1, p->state);
+}
+
+/*
+** Parse only Wiki links, return everything else as TOKEN_RAW.
+**
+** z points to the start of a token. Return the number of
+** characters in that token. Write the token type into *pTokenType.
+*/
+static int nextRawToken(const char *z, Renderer *p, int *pTokenType){
+ int n;
+ if( z[0]=='[' ){
+ if( (n = linkLength(z))>0 ){
+ *pTokenType = TOKEN_LINK;
+ return n;
+ }else if( p->state & WIKI_MARK ){
+ blob_append_string(p->pOut, "<mark>");
+ p->mRender |= RENDER_BADLINK|RENDER_MARK;
+ }else{
+ p->mRender |= RENDER_BADLINK;
+ }
+ }
+ *pTokenType = TOKEN_RAW;
+ return 1 + textLength(z+1, p->state);
+}
+
+/*
+** A single markup is parsed into an instance of the following
+** structure.
+*/
+typedef struct ParsedMarkup ParsedMarkup;
+struct ParsedMarkup {
+ unsigned char endTag; /* True if </...> instead of <...> */
+ unsigned char iCode; /* MARKUP_* */
+ unsigned char nAttr; /* Number of attributes */
+ unsigned short iType; /* MUTYPE_* */
+ struct {
+ unsigned char iACode; /* ATTR_* */
+ char *zValue; /* Argument to this attribute. Might be NULL */
+ char cTerm; /* Original argument termination character */
+ } aAttr[10];
+};
+
+/*
+** Return true if attribute iACode has already been parsed into p.
+*/
+static int markupHasAttr(const ParsedMarkup *p, int iACode){
+ int i;
+ for(i=0; i<p->nAttr; i++){
+ if( p->aAttr[i].iACode==iACode ) return 1;
+ }
+ return 0;
+}
+
+/*
+** z[] is an HTML markup element - something that begins with '<'.
+** Parse this element into the p structure.
+**
+** The content of z[] might be modified by converting characters
+** to lowercase and by inserting some "\000" characters.
+*/
+static amsk_t parseMarkup(ParsedMarkup *p, char *z){
+ int i, j, c;
+ int iACode;
+ char *zValue;
+ amsk_t seen = 0;
+ char zTag[100];
+
+ if( z[1]=='/' ){
+ p->endTag = 1;
+ i = 2;
+ }else{
+ p->endTag = 0;
+ i = 1;
+ }
+ j = 0;
+ while( fossil_isalnum(z[i]) ){
+ if( j<(int)sizeof(zTag)-1 ) zTag[j++] = fossil_tolower(z[i]);
+ i++;
+ }
+ zTag[j] = 0;
+ p->iCode = findTag(zTag);
+ p->iType = aMarkup[p->iCode].iType;
+ p->nAttr = 0;
+ c = 0;
+ if( z[i]=='-' ){
+ p->aAttr[0].iACode = iACode = ATTR_ID;
+ i++;
+ p->aAttr[0].zValue = &z[i];
+ while( fossil_isalnum(z[i]) ){ i++; }
+ p->aAttr[0].cTerm = c = z[i];
+ z[i++] = 0;
+ p->nAttr = 1;
+ if( c=='>' ) return 0;
+ }
+ while( fossil_isspace(z[i]) ){ i++; }
+ while( c!='>' && p->nAttr<8 && fossil_isalpha(z[i]) ){
+ int attrOk; /* True to preserve attribute. False to ignore it */
+ j = 0;
+ while( fossil_isalnum(z[i]) ){
+ if( j<(int)sizeof(zTag)-1 ) zTag[j++] = fossil_tolower(z[i]);
+ i++;
+ }
+ zTag[j] = 0;
+ p->aAttr[p->nAttr].iACode = iACode = findAttr(zTag);
+ attrOk = iACode!=0 && !markupHasAttr(p, iACode);
+ while( fossil_isspace(z[i]) ){ z++; }
+ if( z[i]!='=' ){
+ p->aAttr[p->nAttr].zValue = 0;
+ p->aAttr[p->nAttr].cTerm = 0;
+ c = 0;
+ }else{
+ i++;
+ while( fossil_isspace(z[i]) ){ z++; }
+ if( z[i]=='"' ){
+ i++;
+ zValue = &z[i];
+ while( z[i] && z[i]!='"' ){ i++; }
+ }else if( z[i]=='\'' ){
+ i++;
+ zValue = &z[i];
+ while( z[i] && z[i]!='\'' ){ i++; }
+ }else{
+ zValue = &z[i];
+ while( !fossil_isspace(z[i]) && z[i]!='>' ){
+ if( z[i]=='\'' || z[i]=='"' ) attrOk = 0;
+ i++;
+ }
+ }
+ if( attrOk ){
+ p->aAttr[p->nAttr].zValue = zValue;
+ p->aAttr[p->nAttr].cTerm = c = z[i];
+ if( z[i]==0 ){
+ i--;
+ }else{
+ z[i] = 0;
+ }
+ }
+ i++;
+ }
+ if( attrOk ){
+ if( aAttribute[iACode].iMask ) seen |= aAttribute[iACode].iMask;
+ p->nAttr++;
+ }
+ while( fossil_isspace(z[i]) ){ i++; }
+ if( z[i]==0 || z[i]=='>' || (z[i]=='/' && z[i+1]=='>') ) break;
+ }
+ return seen;
+}
+
+/*
+** Append an HTML attribute value, rewriting root-relative URLs in src
+** and srcset the same way (%R prefix).
+*/
+static void appendRewrittenAttrValue(Blob *pOut, int iACode, const char *zVal){
+ if( iACode==ATTR_SRC && zVal[0]=='/' ){
+ blob_appendf(pOut, "=\"%R%s\"", zVal);
+ return;
+ }
+ if( iACode==ATTR_SRCSET ){
+ const char *z = zVal;
+ int nCand = 0;
+ blob_append_char(pOut, '=');
+ blob_append_char(pOut, '"');
+ while( z[0] ){
+ const char *zComma = strchr(z, ',');
+ int len = zComma ? (int)(zComma - z) : (int)strlen(z);
+ const char *zCand = z;
+ int urlStart = 0;
+ int urlLen;
+ if( len>0 ){
+ while( urlStart<len && fossil_isspace(zCand[urlStart]) ) urlStart++;
+ urlLen = urlStart;
+ while( urlLen<len && !fossil_isspace(zCand[urlLen]) ) urlLen++;
+ urlLen -= urlStart;
+ if( nCand++ ) blob_append_char(pOut, ',');
+ if( urlStart>0 ){
+ blob_append(pOut, zCand, urlStart);
+ }
+ if( urlLen>0 && zCand[urlStart]=='/' ){
+ blob_appendf(pOut, "%R%.*s", urlLen, zCand+urlStart);
+ }else if( urlLen>0 ){
+ blob_appendf(pOut, "%.*s", urlLen, zCand+urlStart);
+ }
+ if( urlStart+urlLen < len ){
+ blob_appendf(pOut, "%.*s", len-urlStart-urlLen, zCand+urlStart+urlLen);
+ }
+ }
+ if( zComma==0 ) break;
+ z = zComma + 1;
+ }
+ blob_append_char(pOut, '"');
+ return;
+ }
+ blob_appendf(pOut, "=\"%s\"", zVal);
+}
+
+/*
+** Render markup on the given blob.
+*/
+static void renderMarkup(Blob *pOut, ParsedMarkup *p){
+ int i;
+ if( p->endTag ){
+ blob_appendf(pOut, "</%s>", aMarkup[p->iCode].zName);
+ }else{
+ blob_appendf(pOut, "<%s", aMarkup[p->iCode].zName);
+ for(i=0; i<p->nAttr; i++){
+ blob_appendf(pOut, " %s", aAttribute[p->aAttr[i].iACode].zName);
+ if( p->aAttr[i].zValue ){
+ appendRewrittenAttrValue(pOut, p->aAttr[i].iACode, p->aAttr[i].zValue);
+ }
+ }
+ if (p->iType & MUTYPE_SINGLE){
+ blob_append_string(pOut, " /");
+ }
+ blob_append_char(pOut, '>');
+ }
+}
+
+/*
+** When the markup was parsed, some "\000" may have been inserted.
+** This routine restores to those "\000" values back to their
+** original content.
+*/
+static void unparseMarkup(ParsedMarkup *p){
+ int i, n;
+ for(i=0; i<p->nAttr; i++){
+ char *z = p->aAttr[i].zValue;
+ if( z==0 ) continue;
+ if( p->aAttr[i].cTerm ){
+ n = strlen(z);
+ z[n] = p->aAttr[i].cTerm;
+ }
+ }
+}
+
+/*
+** Return the value of attribute attrId. Return NULL if there is no
+** ID attribute.
+*/
+static const char *attributeValue(ParsedMarkup *p, int attrId){
+ int i;
+ for(i=0; i<p->nAttr; i++){
+ if( p->aAttr[i].iACode==attrId ){
+ return p->aAttr[i].zValue;
+ }
+ }
+ return 0;
+}
+
+/*
+** Return the ID attribute for markup. Return NULL if there is no
+** ID attribute.
+*/
+static const char *markupId(ParsedMarkup *p){
+ return attributeValue(p, ATTR_ID);
+}
+
+/*
+** Check markup pMarkup to see if it is a hyperlink with class "button"
+** that is follows by simple text and an </a> only. Example:
+**
+** <a class="button" href="../index.wiki">Index</a>
+**
+** If the markup matches this pattern, and if the WIKI_BUTTONS flag was
+** passed to wiki_convert(), then transform this link into a submenu
+** button, skip the text, and set *pN equal to the total length of the
+** text through the end of </a> and return true. If the markup does
+** not match or if WIKI_BUTTONS is not set, then make no changes to *pN
+** and return false.
+*/
+static int isButtonHyperlink(
+ Renderer *p, /* Renderer state */
+ ParsedMarkup *pMarkup, /* Potential button markup */
+ const char *z, /* Complete text of Wiki */
+ int *pN /* Characters of z[] consumed */
+){
+ const char *zClass;
+ const char *zHref;
+ char *zTag;
+ int i, j;
+ if( (p->state & WIKI_BUTTONS)==0 ) return 0;
+ zClass = attributeValue(pMarkup, ATTR_CLASS);
+ if( zClass==0 ) return 0;
+ if( fossil_strcmp(zClass, "button")!=0 ) return 0;
+ zHref = attributeValue(pMarkup, ATTR_HREF);
+ if( zHref==0 ) return 0;
+ i = *pN;
+ while( z[i] && z[i]!='<' ){ i++; }
+ if( fossil_strnicmp(&z[i], "</a>",4)!=0 ) return 0;
+ for(j=*pN; fossil_isspace(z[j]); j++){}
+ zTag = mprintf("%.*s", i-j, &z[j]);
+ j = (int)strlen(zTag);
+ while( j>0 && fossil_isspace(zTag[j-1]) ){ j--; }
+ if( j==0 ) return 0;
+ style_submenu_element(zTag, "%s", zHref);
+ *pN = i+4;
+ return 1;
+}
+
+/*
+** Pop a single element off of the stack. As the element is popped,
+** output its end tag if it is not a </div> tag.
+*/
+static void popStack(Renderer *p){
+ if( p->nStack ){
+ int iCode;
+ p->nStack--;
+ iCode = p->aStack[p->nStack].iCode;
+ if( (iCode!=MARKUP_DIV || p->aStack[p->nStack].zId==0) && p->pOut ){
+ blob_appendf(p->pOut, "</%s>", aMarkup[iCode].zName);
+ }
+ }
+}
+
+/*
+** Push a new markup value onto the stack. Enlarge the stack
+** if necessary.
+*/
+static void pushStackWithId(Renderer *p, int elem, const char *zId, int w){
+ if( p->nStack>=p->nAlloc ){
+ p->nAlloc = p->nAlloc*2 + 100;
+ p->aStack = fossil_realloc(p->aStack, p->nAlloc*sizeof(p->aStack[0]));
+ }
+ p->aStack[p->nStack].iCode = elem;
+ p->aStack[p->nStack].zId = zId;
+ p->aStack[p->nStack].allowWiki = w;
+ p->nStack++;
+}
+static void pushStack(Renderer *p, int elem){
+ pushStackWithId(p, elem, 0, 0);
+}
+
+/*
+** Pop the stack until the top-most iTag element is removed.
+** If there is no iTag element on the stack, this routine
+** is a no-op.
+*/
+static void popStackToTag(Renderer *p, int iTag){
+ int i;
+ for(i=p->nStack-1; i>=0; i--){
+ if( p->aStack[i].iCode!=iTag ) continue;
+ if( p->aStack[i].zId ) continue;
+ break;
+ }
+ if( i<0 ) return;
+ while( p->nStack>i ){
+ popStack(p);
+ }
+}
+
+/*
+** Attempt to find a find a tag of type iTag with id zId. Return -1
+** if not found. If found, return its stack level.
+*/
+static int findTagWithId(Renderer *p, int iTag, const char *zId){
+ int i;
+ assert( zId!=0 );
+ for(i=p->nStack-1; i>=0; i--){
+ if( p->aStack[i].iCode!=iTag ) continue;
+ if( p->aStack[i].zId==0 ) continue;
+ if( fossil_strcmp(zId, p->aStack[i].zId)!=0 ) continue;
+ break;
+ }
+ return i;
+}
+
+/*
+** Pop the stack until the top-most element of the stack
+** is an element that matches the type in iMask. Return
+** code of the markup element that is on left on top of the stack.
+** If the stack does not have an element
+** that matches iMask, then leave the stack unchanged and
+** return false (MARKUP_INVALID).
+*/
+static int backupToType(Renderer *p, int iMask){
+ int i;
+ for(i=p->nStack-1; i>=0; i--){
+ if( aMarkup[p->aStack[i].iCode].iType & iMask ) break;
+ }
+ if( i<0 ) return 0;
+ i++;
+ while( p->nStack>i ){
+ popStack(p);
+ }
+ return p->aStack[i-1].iCode;
+}
+
+/*
+** Begin a new paragraph if that something that is needed.
+*/
+static void startAutoParagraph(Renderer *p){
+ if( p->wantAutoParagraph==0 ) return;
+ if( p->state & WIKI_LINKSONLY ) return;
+ if( p->wikiList==MARKUP_OL || p->wikiList==MARKUP_UL ) return;
+ blob_append_string(p->pOut, "<p>");
+ p->wantAutoParagraph = 0;
+ p->inAutoParagraph = 1;
+}
+
+/*
+** End a paragraph if we are in one.
+*/
+static void endAutoParagraph(Renderer *p){
+ if( p->inAutoParagraph ){
+ p->inAutoParagraph = 0;
+ }
+}
+
+/*
+** If the input string corresponds to an existing baseline,
+** return true.
+*/
+static int is_valid_hname(const char *z){
+ int n = strlen(z);
+ if( n<4 || n>HNAME_MAX ) return 0;
+ if( !validate16(z, n) ) return 0;
+ return 1;
+}
+
+/*
+** Return TRUE if a hash name corresponds to an artifact in this
+** repository.
+*/
+static int in_this_repo(const char *zUuid){
+ static Stmt q;
+ int rc;
+ int n;
+ char zU2[HNAME_MAX+1];
+ db_static_prepare(&q,
+ "SELECT 1 FROM blob WHERE uuid>=:u AND uuid<:u2"
+ );
+ db_bind_text(&q, ":u", zUuid);
+ n = (int)strlen(zUuid);
+ if( n>=(int)sizeof(zU2) ) n = sizeof(zU2)-1;
+ memcpy(zU2, zUuid, n);
+ zU2[n-1]++;
+ zU2[n] = 0;
+ db_bind_text(&q, ":u2", zU2);
+ rc = db_step(&q);
+ db_reset(&q);
+ return rc==SQLITE_ROW;
+}
+
+/*
+** zTarget is guaranteed to be a UUID. It might be the UUID of a ticket.
+** If it is, store in *pClosed a true or false depending on whether or not
+** the ticket is closed and return true. If zTarget
+** is not the UUID of a ticket, return false.
+*/
+int is_ticket(
+ const char *zTarget, /* Ticket UUID */
+ int *pClosed /* True if the ticket is closed */
+){
+ static Stmt q;
+ int n;
+ int rc;
+ char zLower[HNAME_MAX+1];
+ char zUpper[HNAME_MAX+1];
+ n = strlen(zTarget);
+ memcpy(zLower, zTarget, n+1);
+ canonical16(zLower, n+1);
+ memcpy(zUpper, zLower, n+1);
+ zUpper[n-1]++;
+ if( !db_static_stmt_is_init(&q) ){
+ char *zClosedExpr = db_get("ticket-closed-expr", "status='Closed'");
+ db_static_prepare(&q,
+ "SELECT %z FROM ticket "
+ " WHERE tkt_uuid>=:lwr AND tkt_uuid<:upr",
+ zClosedExpr /*safe-for-%s*/
+ );
+ }
+ db_bind_text(&q, ":lwr", zLower);
+ db_bind_text(&q, ":upr", zUpper);
+ if( db_step(&q)==SQLITE_ROW ){
+ rc = 1;
+ *pClosed = db_column_int(&q, 0);
+ }else{
+ rc = 0;
+ }
+ db_reset(&q);
+ return rc;
+}
+
+/*
+** Return a pointer to the name part of zTarget (skipping the "wiki:" prefix
+** if there is one) if zTarget is a valid wiki page name. Return NULL if
+** zTarget names a page that does not exist.
+*/
+static const char *validWikiPageName(int mFlags, const char *zTarget){
+ if( strncmp(zTarget, "wiki:", 5)==0
+ && wiki_name_is_wellformed((const unsigned char*)zTarget) ){
+ return zTarget+5;
+ }
+ if( strcmp(zTarget, "Sandbox")==0 ) return zTarget;
+ if( wiki_name_is_wellformed((const unsigned char *)zTarget)
+ && ((mFlags & WIKI_NOBADLINKS)==0 ||
+ db_exists("SELECT 1 FROM tag WHERE tagname GLOB 'wiki-%q'"
+ " AND (SELECT value FROM tagxref WHERE tagid=tag.tagid"
+ " ORDER BY mtime DESC LIMIT 1) > 0", zTarget))
+ ){
+ return zTarget;
+ }
+ return 0;
+}
+
+static const char *wikiOverrideHash = 0;
+
+/*
+** Fossil-wiki hyperlinks to wiki pages should be overridden to the
+** hash value supplied. If the value is NULL, then override is cancelled
+** and all overwrites operate normally.
+*/
+void wiki_hyperlink_override(const char *zUuid){
+ wikiOverrideHash = zUuid;
+}
+
+
+/*
+** If links to wiki page zTarget should be redirected to some historical
+** version of that page, then return the hash of the historical version.
+** If no override is required, return NULL.
+*/
+static const char *wiki_is_overridden(const char *zTarget){
+ if( wikiOverrideHash==0 ) return 0;
+ /* The override should only happen if the override version is not the
+ ** latest version of the wiki page. */
+ if( !db_exists(
+ "SELECT 1 FROM tag, blob, tagxref AS xA, tagxref AS xB "
+ " WHERE tag.tagname GLOB 'wiki-%q*'"
+ " AND blob.uuid GLOB '%q'"
+ " AND xA.tagid=tag.tagid AND xA.rid=blob.rid"
+ " AND xB.tagid=tag.tagid AND xB.mtime>xA.mtime",
+ zTarget, wikiOverrideHash
+ ) ){
+ return 0;
+ }
+ return wikiOverrideHash;
+}
+
+/*
+** Resolve a hyperlink. The zTarget argument is the content of the [...]
+** in the wiki. Append to the output string whatever text is appropriate
+** for opening the hyperlink. Write into zClose[0...nClose-1] text that will
+** close the markup.
+**
+** If this routine determines that no hyperlink should be generated, then
+** set zClose[0] to 0.
+**
+** Actually, this routine might or might not append the hyperlink, depending
+** on current rendering rules: specifically does the current user have
+** "History" permission.
+**
+** [http://fossil-scm.org/]
+** [https://fossil-scm.org/]
+** [ftp://fossil-scm.org/]
+** [mailto:fossil-users@lists.fossil-scm.org]
+**
+** [/path] -> Refers to the root of the Fossil hierarchy, not
+** the root of the URI domain
+**
+** [./relpath]
+** [../relpath]
+**
+** [#fragment]
+**
+** [0123456789abcdef]
+**
+** [WikiPageName]
+** [wiki:WikiPageName]
+**
+** [2010-02-27 07:13]
+**
+** [InterMap:Link] -> Interwiki link
+**
+** The return value is a mask of RENDER_* values indicating what happened.
+** Probably the return value is 0 on success and RENDER_BADTARGET or
+** RENDER_BADLINK if there are problems.
+*/
+int wiki_resolve_hyperlink(
+ Blob *pOut, /* Write the HTML output here */
+ int mFlags, /* Rendering option flags */
+ const char *zTarget, /* Hyperlink target; text within [...] */
+ char *zClose, /* Write hyperlink closing text here */
+ int nClose, /* Bytes available in zClose[] */
+ const char *zOrig, /* Complete document text */
+ const char *zTitle /* Title of the link */
+){
+ const char *zTerm = "</a>";
+ const char *z;
+ char *zExtra = 0;
+ const char *zExtraNS = 0;
+ char *zRemote = 0;
+ int rc = 0;
+
+ if( zTitle ){
+ zExtra = mprintf(" title='%h'", zTitle);
+ zExtraNS = zExtra+1;
+ }else if( mFlags & WIKI_TARGET_BLANK ){
+ zExtra = mprintf(" target='_blank'");
+ zExtraNS = zExtra+1;
+ }
+ assert( nClose>=20 );
+ if( strncmp(zTarget, "http:", 5)==0
+ || strncmp(zTarget, "https:", 6)==0
+ || strncmp(zTarget, "ftp:", 4)==0
+ || strncmp(zTarget, "mailto:", 7)==0
+ ){
+ blob_appendf(pOut, "<a href=\"%s\"%s>", zTarget, zExtra);
+ }else if( zTarget[0]=='/' ){
+ blob_appendf(pOut, "<a href=\"%R%h\"%s>", zTarget, zExtra);
+ }else if( zTarget[0]=='.'
+ && (zTarget[1]=='/' || (zTarget[1]=='.' && zTarget[2]=='/'))
+ && (mFlags & WIKI_LINKSONLY)==0 ){
+ blob_appendf(pOut, "<a href=\"%h\"%s>", zTarget, zExtra);
+ }else if( zTarget[0]=='#' ){
+ blob_appendf(pOut, "<a href=\"%h\"%s>", zTarget, zExtra);
+ }else if( is_valid_hname(zTarget) ){
+ int isClosed = 0;
+ const char *zLB = (mFlags & WIKI_NOBRACKET)==0 ? "[" : "";
+ if( strlen(zTarget)<=HNAME_MAX && is_ticket(zTarget, &isClosed) ){
+ /* Special display processing for tickets. Display the hyperlink
+ ** as crossed out if the ticket is closed.
+ */
+ if( isClosed ){
+ if( g.perm.Hyperlink ){
+ blob_appendf(pOut,
+ "%z<span class=\"wikiTagCancelled\">%s",
+ xhref(zExtraNS,"%R/info/%s",zTarget), zLB
+ );
+ zTerm = "]</span></a>";
+ }else{
+ blob_appendf(pOut,"<span class=\"wikiTagCancelled\">%s", zLB);
+ zTerm = "]</span>";
+ }
+ }else{
+ if( g.perm.Hyperlink ){
+ blob_appendf(pOut,"%z%s", xhref(zExtraNS,"%R/info/%s", zTarget),zLB);
+ zTerm = "]</a>";
+ }else{
+ blob_appendf(pOut, "%s", zLB);
+ zTerm = "]";
+ }
+ }
+ }else if( !in_this_repo(zTarget) ){
+ if( (mFlags & (WIKI_LINKSONLY|WIKI_NOBADLINKS))!=0 ){
+ zTerm = "";
+ }else if( (mFlags & WIKI_MARK)!=0 ){
+ blob_appendf(pOut, "<mark>%s", zLB);
+ zTerm = "]</mark>";
+ rc |= RENDER_MARK;
+ }else{
+ blob_appendf(pOut, "<span class=\"brokenlink\">%s", zLB);
+ zTerm = "]</span>";
+ }
+ rc |= RENDER_BADTARGET;
+ }else if( g.perm.Hyperlink || (mFlags & WIKI_ADMIN)!=0 ){
+ blob_appendf(pOut, "%z%s",xhref(zExtraNS, "%R/info/%s", zTarget), zLB);
+ zTerm = "]</a>";
+ }else{
+ zTerm = "";
+ }
+ if( zTerm[0]==']' && (mFlags & WIKI_NOBRACKET)!=0 ) zTerm++;
+ }else if( (zRemote = interwiki_url(zTarget))!=0 ){
+ blob_appendf(pOut, "<a href=\"%z\"%s>", zRemote, zExtra);
+ zTerm = "</a>";
+ }else if( (z = validWikiPageName(mFlags, zTarget))!=0 ){
+ /* The link is to a valid wiki page name */
+ const char *zOverride = wiki_is_overridden(zTarget);
+ if( zOverride ){
+ blob_appendf(pOut, "<a href=\"%R/info/%S\"%s>", zOverride, zExtra);
+ }else{
+ blob_appendf(pOut, "<a href=\"%R/wiki?name=%T\"%s>", z, zExtra);
+ }
+ }else if( strlen(zTarget)>=10 && fossil_isdigit(zTarget[0]) && zTarget[4]=='-'
+ && db_int(0, "SELECT datetime(%Q) NOT NULL", zTarget) ){
+ /* Dates or date-and-times in ISO8601 resolve to a link to the
+ ** timeline for that date */
+ blob_appendf(pOut, "<a href=\"%R/timeline?c=%T\"%s>", zTarget, zExtra);
+ }else if( mFlags & WIKI_MARKDOWNLINKS ){
+ /* If none of the above, and if rendering links for markdown, then
+ ** create a link to the literal text of the target */
+ blob_appendf(pOut, "<a href=\"%h\"%s>", zTarget, zExtra);
+ }else if( mFlags & WIKI_MARK ){
+ blob_appendf(pOut, "<mark>[");
+ zTerm = "]</mark>";
+ rc |= RENDER_BADTARGET|RENDER_MARK;
+ }else if( zOrig && zTarget>=&zOrig[2]
+ && zTarget[-1]=='[' && !fossil_isspace(zTarget[-2]) ){
+ /* If the hyperlink markup is not preceded by whitespace, then it
+ ** is probably a C-language subscript or similar, not really a
+ ** hyperlink. Just ignore it. */
+ zTerm = "";
+ }else if( (mFlags & (WIKI_NOBADLINKS|WIKI_LINKSONLY))!=0 ){
+ /* Also ignore the link if various flags are set */
+ zTerm = "";
+ rc |= RENDER_BADTARGET;
+ }else{
+ blob_appendf(pOut, "<span class=\"brokenlink\">[%h]", zTarget);
+ zTerm = "</span>";
+ rc |= RENDER_BADTARGET;
+ }
+ if( zExtra ) fossil_free(zExtra);
+ assert( (int)strlen(zTerm)<nClose );
+ sqlite3_snprintf(nClose, zClose, "%s", zTerm);
+ return rc;
+}
+
+/*
+** Check zTarget to see if it looks like a valid hyperlink target.
+** Return true if it does seem valid and false if not.
+*/
+int wiki_valid_link_target(char *zTarget){
+ char zClose[30];
+ Blob notUsed;
+ blob_init(&notUsed, 0, 0);
+ wiki_resolve_hyperlink(&notUsed, WIKI_NOBADLINKS|WIKI_ADMIN,
+ zTarget, zClose, sizeof(zClose)-1, 0, 0);
+ blob_reset(&notUsed);
+ return zClose[0]!=0;
+}
+
+/*
+** Check to see if the given parsed markup is the correct
+** </verbatim> tag.
+*/
+static int endVerbatim(Renderer *p, ParsedMarkup *pMarkup){
+ char *z;
+ assert( p->inVerbatim );
+ if( pMarkup->iCode!=MARKUP_VERBATIM ) return 0;
+ if( !pMarkup->endTag ) return 0;
+ if( p->zVerbatimId==0 ) return 1;
+ if( pMarkup->nAttr!=1 ) return 0;
+ z = pMarkup->aAttr[0].zValue;
+ return fossil_strcmp(z, p->zVerbatimId)==0;
+}
+
+/*
+** z[] points to the text that immediately follows markup of the form:
+**
+** <verbatim type='pikchr ...'>
+**
+** zClass is the argument to "type". This routine will process the
+** Pikchr text through the next matching </verbatim> (or until end-of-file)
+** and append the resulting SVG output onto p. It then returns the
+** number of bytes of text processed, including the closing </verbatim>.
+*/
+static int wiki_process_pikchr(Renderer *p, char *z, const char *zClass){
+ ParsedMarkup m; /* Parsed closing tag */
+ int i = 0; /* For looping over z[] in search of </verbatim> */
+ int iRet = 0; /* Value to return */
+ int atEnd = 0; /* True if se have found the </verbatim> */
+ int nMarkup = 0; /* Length of a markup we are checking */
+
+ /* Search for the closing </verbatim> tag */
+ while( z[i]!=0 ){
+ char *zEnd = strchr(z+i, '<');
+ if( zEnd==0 ){
+ i += (int)strlen(z+i);
+ iRet = i;
+ break;
+ }
+ nMarkup = html_tag_length(zEnd);
+ if( nMarkup<11 || fossil_strnicmp(zEnd, "</verbatim", 10)!=0 ){
+ i = (int)(zEnd - z) + 1;
+ continue;
+ }
+ (void)parseMarkup(&m, z+i);
+ atEnd = endVerbatim(p, &m);
+ unparseMarkup(&m);
+ if( atEnd ){
+ iRet = i + nMarkup;
+ break;
+ }
+ i++;
+ }
+
+ /* The Pikchr source text should be i character in length and iRet is
+ ** i plus the number of bytes in the </verbatim>. Generate the reply.
+ */
+ assert( strncmp(zClass,"pikchr",6)==0 );
+ zClass += 6;
+ while( fossil_isspace(zClass[0]) ) zClass++;
+ blob_append(p->pOut, "<p>", 3);
+ pikchr_to_html(p->pOut, z, i, zClass, (int)strlen(zClass));
+ blob_append(p->pOut, "</p>\n", 5);
+ return iRet;
+}
+
+/*
+** Return the MUTYPE for the top of the stack.
+*/
+static int stackTopType(Renderer *p){
+ if( p->nStack<=0 ) return 0;
+ return aMarkup[p->aStack[p->nStack-1].iCode].iType;
+}
+
+/*
+** Convert the wiki in z[] into html in the renderer p. The
+** renderer has already been initialized.
+**
+** This routine will probably modify the content of z[].
+*/
+static void wiki_render(Renderer *p, char *z){
+ int tokenType;
+ ParsedMarkup markup;
+ int n;
+ int wikiHtmlOnly = (p->state & (WIKI_HTMLONLY | WIKI_LINKSONLY))!=0;
+ int linksOnly = (p->state & WIKI_LINKSONLY)!=0;
+ char *zOrig = z;
+
+ /* Make sure the attribute constants and names still align
+ ** following changes in the attribute list. */
+ assert( fossil_strcmp(aAttribute[ATTR_WIDTH].zName, "width")==0 );
+
+ while( z[0] ){
+ if( wikiHtmlOnly ){
+ n = nextRawToken(z, p, &tokenType);
+ }else{
+ n = nextWikiToken(z, p, &tokenType);
+ }
+ p->state &= ~(AT_NEWLINE|AT_PARAGRAPH);
+ switch( tokenType ){
+ case TOKEN_PARAGRAPH: {
+ if( p->wikiList ){
+ popStackToTag(p, p->wikiList);
+ p->wikiList = 0;
+ }
+ endAutoParagraph(p);
+ blob_append_string(p->pOut, "\n\n");
+ p->wantAutoParagraph = 1;
+ p->state |= AT_PARAGRAPH|AT_NEWLINE;
+ break;
+ }
+ case TOKEN_NEWLINE: {
+ if( p->renderFlags & WIKI_NEWLINE ){
+ blob_append_string(p->pOut, "<br>\n");
+ }else{
+ blob_append_string(p->pOut, "\n");
+ }
+ p->state |= AT_NEWLINE;
+ break;
+ }
+ case TOKEN_BUL_LI: {
+ p->mRender |= RENDER_BLOCK;
+ if( p->wikiList!=MARKUP_UL ){
+ if( p->wikiList ){
+ popStackToTag(p, p->wikiList);
+ }
+ endAutoParagraph(p);
+ pushStack(p, MARKUP_UL);
+ blob_append_string(p->pOut, "<ul>");
+ p->wikiList = MARKUP_UL;
+ }
+ popStackToTag(p, MARKUP_LI);
+ startAutoParagraph(p);
+ pushStack(p, MARKUP_LI);
+ blob_append_string(p->pOut, "<li>");
+ break;
+ }
+ case TOKEN_NUM_LI: {
+ p->mRender |= RENDER_BLOCK;
+ if( p->wikiList!=MARKUP_OL ){
+ if( p->wikiList ){
+ popStackToTag(p, p->wikiList);
+ }
+ endAutoParagraph(p);
+ pushStack(p, MARKUP_OL);
+ blob_append_string(p->pOut, "<ol>");
+ p->wikiList = MARKUP_OL;
+ }
+ popStackToTag(p, MARKUP_LI);
+ startAutoParagraph(p);
+ pushStack(p, MARKUP_LI);
+ blob_append_string(p->pOut, "<li>");
+ break;
+ }
+ case TOKEN_ENUM: {
+ p->mRender |= RENDER_BLOCK;
+ if( p->wikiList!=MARKUP_OL ){
+ if( p->wikiList ){
+ popStackToTag(p, p->wikiList);
+ }
+ endAutoParagraph(p);
+ pushStack(p, MARKUP_OL);
+ blob_append_string(p->pOut, "<ol>");
+ p->wikiList = MARKUP_OL;
+ }
+ popStackToTag(p, MARKUP_LI);
+ startAutoParagraph(p);
+ pushStack(p, MARKUP_LI);
+ blob_appendf(p->pOut, "<li value=\"%d\">", atoi(z));
+ break;
+ }
+ case TOKEN_INDENT: {
+ p->mRender |= RENDER_BLOCK;
+ assert( p->wikiList==0 );
+ pushStack(p, MARKUP_BLOCKQUOTE);
+ blob_append_string(p->pOut, "<blockquote>");
+ p->wantAutoParagraph = 0;
+ p->wikiList = MARKUP_BLOCKQUOTE;
+ break;
+ }
+ case TOKEN_CHARACTER: {
+ startAutoParagraph(p);
+ if( p->state & WIKI_MARK ){
+ blob_append_string(p->pOut, "<mark>");
+ p->mRender |= RENDER_MARK;
+ }
+ if( z[0]=='<' ){
+ p->mRender |= RENDER_BADTAG;
+ blob_append_string(p->pOut, "&lt;");
+ }else if( z[0]=='&' ){
+ p->mRender |= RENDER_BADENTITY;
+ blob_append_string(p->pOut, "&amp;");
+ }
+ if( p->state & WIKI_MARK ){
+ if( fossil_isalnum(z[1]) || (z[1]=='/' && fossil_isalnum(z[2])) ){
+ int kk;
+ for(kk=2; fossil_isalnum(z[kk]); kk++){}
+ blob_append(p->pOut, &z[1], kk-1);
+ n = kk;
+ }
+ blob_append_string(p->pOut, "</mark>");
+ }
+ break;
+ }
+ case TOKEN_LINK: {
+ char *zTarget;
+ char *zDisplay = 0;
+ int i, j;
+ int savedState;
+ char zClose[20];
+ char cS1 = 0;
+ int iS1 = 0;
+
+ startAutoParagraph(p);
+ p->mRender |= RENDER_LINK;
+ zTarget = &z[1];
+ for(i=1; z[i] && z[i]!=']'; i++){
+ if( z[i]=='|' && zDisplay==0 ){
+ zDisplay = &z[i+1];
+ for(j=i; j>0 && fossil_isspace(z[j-1]); j--){}
+ iS1 = j;
+ cS1 = z[j];
+ z[j] = 0;
+ }
+ }
+ z[i] = 0;
+ if( zDisplay==0 ){
+ zDisplay = zTarget + interwiki_removable_prefix(zTarget);
+ }else{
+ while( fossil_isspace(*zDisplay) ) zDisplay++;
+ }
+ p->mRender |= wiki_resolve_hyperlink(p->pOut, p->state,
+ zTarget, zClose, sizeof(zClose), zOrig, 0);
+ if( linksOnly || zClose[0]==0 || p->inVerbatim ){
+ if( cS1 ) z[iS1] = cS1;
+ if( zClose[0]!=']' ){
+ blob_appendf(p->pOut, "[%h]%s", zTarget, zClose);
+ }else{
+ blob_appendf(p->pOut, "%h%s", zTarget, zClose);
+ }
+ }else{
+ savedState = p->state;
+ p->state &= ~ALLOW_WIKI;
+ p->state |= FONT_MARKUP_ONLY;
+ wiki_render(p, zDisplay);
+ p->state = savedState;
+ blob_append(p->pOut, zClose, -1);
+ }
+ break;
+ }
+ case TOKEN_TEXT: {
+ int i;
+ for(i=0; i<n && fossil_isspace(z[i]); i++){}
+ if( i<n ) startAutoParagraph(p);
+ blob_append(p->pOut, z, n);
+ break;
+ }
+ case TOKEN_RAW: {
+ if( linksOnly ){
+ htmlize_to_blob(p->pOut, z, n);
+ }else{
+ blob_append(p->pOut, z, n);
+ }
+ break;
+ }
+ case TOKEN_MARKUP: {
+ const char *zId;
+ int iDiv;
+ (void)parseMarkup(&markup, z);
+
+ /* Convert <title> to <h1 align='center'> */
+ if( markup.iCode==MARKUP_TITLE && !p->inVerbatim ){
+ markup.iCode = MARKUP_H1;
+ markup.nAttr = 1;
+ markup.aAttr[0].iACode = ATTR_ALIGN;
+ markup.aAttr[0].zValue = "center";
+ markup.aAttr[0].cTerm = 0;
+ }
+
+ /* Markup of the form </div id=ID> where there is a matching
+ ** ID somewhere on the stack. Exit any contained verbatim.
+ ** Pop the stack up to the matching <div>. Discard the </div>
+ */
+ if( markup.iCode==MARKUP_DIV && markup.endTag &&
+ (zId = markupId(&markup))!=0 &&
+ (iDiv = findTagWithId(p, MARKUP_DIV, zId))>=0
+ ){
+ if( p->inVerbatim ){
+ p->inVerbatim = 0;
+ p->state = p->preVerbState;
+ blob_append_string(p->pOut, "</pre>");
+ }
+ while( p->nStack>iDiv+1 ) popStack(p);
+ if( p->aStack[iDiv].allowWiki ){
+ p->state |= ALLOW_WIKI;
+ }else{
+ p->state &= ~ALLOW_WIKI;
+ }
+ assert( p->nStack==iDiv+1 );
+ p->nStack--;
+ }else
+
+ /* If within <verbatim id=ID> ignore everything other than
+ ** </verbatim id=ID> and the </dev id=ID2> above.
+ */
+ if( p->inVerbatim ){
+ if( endVerbatim(p, &markup) ){
+ p->inVerbatim = 0;
+ p->state = p->preVerbState;
+ blob_append_string(p->pOut, "</pre>");
+ }else{
+ unparseMarkup(&markup);
+ blob_append_string(p->pOut, "&lt;");
+ n = 1;
+ }
+ }else
+
+ /* Render invalid markup literally. The markup appears in the
+ ** final output as plain text.
+ */
+ if( markup.iCode==MARKUP_INVALID ){
+ p->mRender |= RENDER_BADTAG;
+ unparseMarkup(&markup);
+ startAutoParagraph(p);
+ if( p->state & WIKI_MARK ){
+ p->mRender |= RENDER_MARK;
+ blob_append_string(p->pOut, "<mark>");
+ htmlize_to_blob(p->pOut, z, n);
+ blob_append_string(p->pOut, "</mark>");
+ }else{
+ blob_append_string(p->pOut, "&lt;");
+ htmlize_to_blob(p->pOut, z+1, n-1);
+ }
+ }else
+
+ /* If the markup is not font-change markup ignore it if the
+ ** font-change-only flag is set.
+ */
+ if( (markup.iType&MUTYPE_FONT)==0 && (p->state & FONT_MARKUP_ONLY)!=0 ){
+ /* Do nothing */
+ }else
+
+ if( markup.iCode==MARKUP_NOWIKI ){
+ if( markup.endTag ){
+ p->state |= ALLOW_WIKI;
+ }else{
+ p->state &= ~ALLOW_WIKI;
+ }
+ }else
+
+ /* Generate end-tags */
+ if( markup.endTag ){
+ popStackToTag(p, markup.iCode);
+ }else
+
+ /* Push <div> markup onto the stack together with the id=ID attribute.
+ */
+ if( markup.iCode==MARKUP_DIV && attributeValue(&markup, ATTR_ID)!=0 ){
+ pushStackWithId(p, markup.iCode, markupId(&markup),
+ (p->state & ALLOW_WIKI)!=0);
+ }else
+
+ /* Enter <verbatim> processing. With verbatim enabled, all other
+ ** markup other than the corresponding end-tag with the same ID is
+ ** ignored.
+ */
+ if( markup.iCode==MARKUP_VERBATIM ){
+ int ii; /*, vAttrDidAppend=0;*/
+ const char *zClass = 0;
+ p->zVerbatimId = 0;
+ p->inVerbatim = 1;
+ p->preVerbState = p->state;
+ p->state &= ~ALLOW_WIKI;
+ for(ii=0; ii<markup.nAttr; ii++){
+ if( markup.aAttr[ii].iACode == ATTR_ID ){
+ p->zVerbatimId = markup.aAttr[ii].zValue;
+ }else if( markup.aAttr[ii].iACode==ATTR_TYPE ){
+ zClass = markup.aAttr[ii].zValue;
+ }else if( markup.aAttr[ii].iACode==ATTR_LINKS
+ && !is_false(markup.aAttr[ii].zValue) ){
+ p->state |= ALLOW_LINKS;
+ }
+ }
+ endAutoParagraph(p);
+ if( zClass==0 ){
+ blob_append_string(p->pOut, "<pre class='verbatim'>");
+ }else if( strncmp(zClass,"pikchr",6)==0 &&
+ (fossil_isspace(zClass[6]) || zClass[6]==0) ){
+ n += wiki_process_pikchr(p, z+n, zClass);
+ p->inVerbatim = 0;
+ p->state = p->preVerbState;
+ }else{
+ blob_appendf(p->pOut, "<pre name='code' class='%h'>",
+ zClass);
+ }
+ p->wantAutoParagraph = 0;
+ }else
+ if( markup.iType==MUTYPE_LI ){
+ if( backupToType(p, MUTYPE_LIST)==0 ){
+ endAutoParagraph(p);
+ pushStack(p, MARKUP_UL);
+ blob_append_string(p->pOut, "<ul>");
+ }
+ pushStack(p, MARKUP_LI);
+ renderMarkup(p->pOut, &markup);
+ }else
+ if( markup.iType==MUTYPE_TR ){
+ if( backupToType(p, MUTYPE_TABLE) ){
+ pushStack(p, MARKUP_TR);
+ renderMarkup(p->pOut, &markup);
+ }
+ }else
+ if( markup.iType==MUTYPE_TD ){
+ if( backupToType(p, MUTYPE_TABLE|MUTYPE_TR) ){
+ if( stackTopType(p)==MUTYPE_TABLE ){
+ pushStack(p, MARKUP_TR);
+ blob_append_string(p->pOut, "<tr>");
+ }
+ p->wantAutoParagraph = 0;
+ pushStack(p, markup.iCode);
+ renderMarkup(p->pOut, &markup);
+ }
+ }else
+ if( markup.iType==MUTYPE_HYPERLINK ){
+ if( !isButtonHyperlink(p, &markup, z, &n) ){
+ popStackToTag(p, markup.iCode);
+ startAutoParagraph(p);
+ renderMarkup(p->pOut, &markup);
+ pushStack(p, markup.iCode);
+ }
+ }else
+ {
+ if( markup.iType==MUTYPE_FONT ){
+ startAutoParagraph(p);
+ }else if( markup.iType==MUTYPE_BLOCK || markup.iType==MUTYPE_LIST ){
+ p->mRender |= RENDER_BLOCKTAG;
+ p->wantAutoParagraph = 0;
+ }
+ if( markup.iCode==MARKUP_HR
+ || markup.iCode==MARKUP_H1
+ || markup.iCode==MARKUP_H2
+ || markup.iCode==MARKUP_H3
+ || markup.iCode==MARKUP_H4
+ || markup.iCode==MARKUP_H5
+ || markup.iCode==MARKUP_P
+ ){
+ endAutoParagraph(p);
+ }
+ if( (markup.iType & MUTYPE_STACK )!=0 ){
+ pushStack(p, markup.iCode);
+ }
+ renderMarkup(p->pOut, &markup);
+ }
+ break;
+ }
+ }
+ z += n;
+ }
+}
+
+/*
+** Transform the text in the pIn blob. Write the results
+** into the pOut blob. The pOut blob should already be
+** initialized. The output is merely appended to pOut.
+** If pOut is NULL, then the output is appended to the CGI
+** reply.
+**
+** Return a mask of RENDER_ flags indicating what happened.
+*/
+int wiki_convert(Blob *pIn, Blob *pOut, int flags){
+ Renderer renderer;
+
+ memset(&renderer, 0, sizeof(renderer));
+ renderer.renderFlags = flags;
+ renderer.state = ALLOW_WIKI|AT_NEWLINE|AT_PARAGRAPH|flags;
+ if( flags & WIKI_INLINE ){
+ renderer.wantAutoParagraph = 0;
+ }else{
+ renderer.wantAutoParagraph = 1;
+ }
+ if( wikiUsesHtml() ){
+ renderer.state |= WIKI_HTMLONLY;
+ }
+ if( pOut ){
+ renderer.pOut = pOut;
+ }else{
+ renderer.pOut = cgi_output_blob();
+ }
+
+ blob_to_utf8_no_bom(pIn, 0);
+ wiki_render(&renderer, blob_str(pIn));
+ endAutoParagraph(&renderer);
+ while( renderer.nStack ){
+ popStack(&renderer);
+ }
+ blob_append_char(renderer.pOut, '\n');
+ free(renderer.aStack);
+ return renderer.mRender;
+}
+
+/*
+** COMMAND: test-wiki-render
+**
+** Usage: %fossil test-wiki-render FILE [OPTIONS]
+**
+** Translate the input FILE from Fossil-wiki into HTML and write
+** the resulting HTML on standard output.
+**
+** Options:
+** --buttons Set the WIKI_BUTTONS flag
+** --dark-pikchr Render pikchrs in dark mode
+** --flow Render as text using comment_format
+** --htmlonly Set the WIKI_HTMLONLY flag
+** --inline Set the WIKI_INLINE flag
+** --linksonly Set the WIKI_LINKSONLY flag
+** -m TEXT Use TEXT in place of the content of FILE
+** --mark Add <mark>...</mark> around problems
+** --nobadlinks Set the WIKI_NOBADLINKS flag
+** --text Run the output through html_to_plaintext()
+** --type Break down the return code from wiki_convert()
+*/
+void test_wiki_render(void){
+ Blob in, out;
+ int flags = 0;
+ int bText;
+ int bFlow = 0;
+ int showType = 0;
+ int mType;
+ const char *zIn;
+ if( find_option("buttons",0,0)!=0 ) flags |= WIKI_BUTTONS;
+ if( find_option("htmlonly",0,0)!=0 ) flags |= WIKI_HTMLONLY;
+ if( find_option("linksonly",0,0)!=0 ) flags |= WIKI_LINKSONLY;
+ if( find_option("nobadlinks",0,0)!=0 ) flags |= WIKI_NOBADLINKS;
+ if( find_option("inline",0,0)!=0 ) flags |= WIKI_INLINE;
+ if( find_option("mark",0,0)!=0 ) flags |= WIKI_MARK;
+ if( find_option("dark-pikchr",0,0)!=0 ){
+ pikchr_to_html_add_flags( PIKCHR_PROCESS_DARK_MODE );
+ }
+ bText = find_option("text",0,0)!=0;
+ bFlow = find_option("flow",0,0)!=0;
+ showType = find_option("type",0,0)!=0;
+ zIn = find_option("msg","m",1);
+ db_find_and_open_repository(OPEN_OK_NOT_FOUND|OPEN_SUBSTITUTE,0);
+ verify_all_options();
+ if( (zIn==0 && g.argc!=3) || (zIn!=0 && g.argc!=2) ) usage("FILE");
+ blob_zero(&out);
+ if( zIn ){
+ blob_init(&in, zIn, -1);
+ }else{
+ blob_read_from_file(&in, g.argv[2], ExtFILE);
+ }
+ mType = wiki_convert(&in, &out, flags);
+ if( bText ){
+ Blob txt;
+ int htot = HTOT_TRIM;
+ if( terminal_is_vt100() ) htot |= HTOT_VT100;
+ if( bFlow ) htot |= HTOT_FLOW;
+ blob_init(&txt, 0, 0);
+ html_to_plaintext(blob_str(&out),&txt, htot);
+ blob_reset(&out);
+ out = txt;
+ }
+ if( bFlow ){
+ fossil_print(" ");
+ comment_print(blob_str(&out), 0, 3, terminal_get_width(80)-3,
+ get_comment_format());
+ }else{
+ blob_write_to_file(&out, "-");
+ }
+ if( showType ){
+ fossil_print("%.*c\nResult Codes:", terminal_get_width(80)-1, '*');
+ if( mType & RENDER_LINK ) fossil_print(" LINK");
+ if( mType & RENDER_ENTITY ) fossil_print(" ENTITY");
+ if( mType & RENDER_TAG ) fossil_print(" TAG");
+ if( mType & RENDER_BLOCKTAG ) fossil_print(" BLOCKTAG");
+ if( mType & RENDER_BLOCK ) fossil_print(" BLOCK");
+ if( mType & RENDER_MARK ) fossil_print(" MARK");
+ if( mType & RENDER_BADLINK ) fossil_print(" BADLINK");
+ if( mType & RENDER_BADTARGET ) fossil_print(" BADTARGET");
+ if( mType & RENDER_BADTAG ) fossil_print(" BADTAG");
+ if( mType & RENDER_BADENTITY ) fossil_print(" BADENTITY");
+ if( mType & RENDER_BADHTML ) fossil_print(" BADHTML");
+ if( mType & RENDER_ERROR ) fossil_print(" ERROR");
+ fossil_print("\n");
+ }
+}
+
+/*
+** COMMAND: test-markdown-render
+**
+** Usage: %fossil test-markdown-render FILE ...
+**
+** Render markdown in FILE as HTML on stdout.
+** Options:
+**
+** --dark-pikchr Render pikchrs in dark mode
+** --lint-footnotes Print stats for footnotes-related issues
+** --safe Restrict the output to use only "safe" HTML
+** --text Run the output through html_to_plaintext().
+*/
+void test_markdown_render(void){
+ Blob in, out;
+ int i;
+ int bSafe = 0, bFnLint = 0, bText = 0;
+ db_find_and_open_repository(OPEN_OK_NOT_FOUND|OPEN_SUBSTITUTE,0);
+ bSafe = find_option("safe",0,0)!=0;
+ bFnLint = find_option("lint-footnotes",0,0)!=0;
+ if( find_option("dark-pikchr",0,0)!=0 ){
+ pikchr_to_html_add_flags( PIKCHR_PROCESS_DARK_MODE );
+ }
+ bText = find_option("text",0,0)!=0;
+ verify_all_options();
+ for(i=2; i<g.argc; i++){
+ blob_zero(&out);
+ blob_read_from_file(&in, g.argv[i], ExtFILE);
+ if( g.argc>3 ){
+ fossil_print("<!------ %h ------->\n", g.argv[i]);
+ }
+ markdown_to_html(&in, 0, &out);
+ safe_html_context( bSafe ? DOCSRC_UNTRUSTED : DOCSRC_TRUSTED );
+ safe_html(&out);
+ if( bText ){
+ Blob txt;
+ blob_init(&txt, 0, 0);
+ html_to_plaintext(blob_str(&out), &txt, HTOT_VT100);
+ blob_reset(&out);
+ out = txt;
+ }
+ blob_write_to_file(&out, "-");
+ blob_reset(&in);
+ blob_reset(&out);
+ }
+ if( bFnLint && (g.ftntsIssues[0] || g.ftntsIssues[1]
+ || g.ftntsIssues[2] || g.ftntsIssues[3] )){
+ fossil_fatal("There were issues with footnotes:\n"
+ " %8d misreference%s\n"
+ " %8d unreferenced\n"
+ " %8d split\n"
+ " %8d overnested",
+ g.ftntsIssues[0], g.ftntsIssues[0]==1?"":"s",
+ g.ftntsIssues[1], g.ftntsIssues[2], g.ftntsIssues[3]);
+ }
+}
+
+/*
+** Search for a <title>...</title> at the beginning of a wiki page.
+** Return true (nonzero) if a title is found. Return zero if there is
+** not title.
+**
+** If a title is found, initialize the pTitle blob to be the content
+** of the title and initialize pTail to be the text that follows the
+** title.
+*/
+int wiki_find_title(Blob *pIn, Blob *pTitle, Blob *pTail){
+ char *z;
+ int i;
+ int iStart;
+ blob_to_utf8_no_bom(pIn, 0);
+ z = blob_str(pIn);
+ for(i=0; fossil_isspace(z[i]); i++){}
+ if( z[i]!='<' ) return 0;
+ i++;
+ if( strncmp(&z[i],"title>", 6)!=0 ) return 0;
+ for(iStart=i+6; fossil_isspace(z[iStart]); iStart++){}
+ for(i=iStart; z[i] && (z[i]!='<' || strncmp(&z[i],"</title>",8)!=0); i++){}
+ if( strncmp(&z[i],"</title>",8)!=0 ){
+ blob_init(pTitle, 0, 0);
+ blob_init(pTail, &z[iStart], -1);
+ return 1;
+ }
+ if( i-iStart>0 ){
+ blob_init(pTitle, &z[iStart], i-iStart);
+ }else{
+ blob_init(pTitle, 0, 0);
+ }
+ blob_init(pTail, &z[i+8], -1);
+ return 1;
+}
+
+/*
+** Parse text looking for wiki hyperlinks in one of the formats:
+**
+** [target]
+** [target|...]
+**
+** Where "target" can be either an artifact ID prefix or a wiki page
+** name. For each such hyperlink found, add an entry to the
+** backlink table.
+**
+** The return value is a mask of RENDER_ flags.
+*/
+int wiki_extract_links(
+ char *z, /* The wiki text from which to extract links */
+ Backlink *pBklnk, /* Backlink extraction context */
+ int flags /* wiki parsing flags */
+){
+ Renderer renderer;
+ int tokenType;
+ ParsedMarkup markup;
+ int n;
+ int wikiHtmlOnly = 0;
+
+ memset(&renderer, 0, sizeof(renderer));
+ renderer.state = ALLOW_WIKI|AT_NEWLINE|AT_PARAGRAPH;
+ if( wikiUsesHtml() ){
+ renderer.state |= WIKI_HTMLONLY;
+ wikiHtmlOnly = 1;
+ }
+
+ while( z[0] ){
+ if( wikiHtmlOnly ){
+ n = nextRawToken(z, &renderer, &tokenType);
+ }else{
+ n = nextWikiToken(z, &renderer, &tokenType);
+ }
+ switch( tokenType ){
+ case TOKEN_LINK: {
+ char *zTarget;
+ int i;
+
+ zTarget = &z[1];
+ for(i=0; zTarget[i] && zTarget[i]!='|' && zTarget[i]!=']'; i++){}
+ while(i>1 && zTarget[i-1]==' '){ i--; }
+ backlink_create(pBklnk, zTarget, i);
+ break;
+ }
+ case TOKEN_MARKUP: {
+ const char *zId;
+ int iDiv;
+ parseMarkup(&markup, z);
+
+ /* Markup of the form </div id=ID> where there is a matching
+ ** ID somewhere on the stack. Exit the verbatim if were are in
+ ** it. Pop the stack up to the matching <div>. Discard the
+ ** </div>
+ */
+ if( markup.iCode==MARKUP_DIV && markup.endTag &&
+ (zId = markupId(&markup))!=0 &&
+ (iDiv = findTagWithId(&renderer, MARKUP_DIV, zId))>=0
+ ){
+ if( renderer.inVerbatim ){
+ renderer.inVerbatim = 0;
+ renderer.state = renderer.preVerbState;
+ }
+ while( renderer.nStack>iDiv+1 ) popStack(&renderer);
+ if( renderer.aStack[iDiv].allowWiki ){
+ renderer.state |= ALLOW_WIKI;
+ }else{
+ renderer.state &= ~ALLOW_WIKI;
+ }
+ renderer.nStack--;
+ }else
+
+ /* If within <verbatim id=ID> ignore everything other than
+ ** </verbatim id=ID> and the </dev id=ID2> above.
+ */
+ if( renderer.inVerbatim ){
+ if( endVerbatim(&renderer, &markup) ){
+ renderer.inVerbatim = 0;
+ renderer.state = renderer.preVerbState;
+ }else{
+ n = 1;
+ }
+ }else
+
+ /* Render invalid markup literally. The markup appears in the
+ ** final output as plain text.
+ */
+ if( markup.iCode==MARKUP_INVALID ){
+ n = 1;
+ }else
+
+ /* If the markup is not font-change markup ignore it if the
+ ** font-change-only flag is set.
+ */
+ if( (markup.iType&MUTYPE_FONT)==0 &&
+ (renderer.state & FONT_MARKUP_ONLY)!=0 ){
+ /* Do nothing */
+ }else
+
+ if( markup.iCode==MARKUP_NOWIKI ){
+ if( markup.endTag ){
+ renderer.state |= ALLOW_WIKI;
+ }else{
+ renderer.state &= ~ALLOW_WIKI;
+ }
+ }else
+
+ /* Generate end-tags */
+ if( markup.endTag ){
+ popStackToTag(&renderer, markup.iCode);
+ }else
+
+ /* Push <div> markup onto the stack together with the id=ID attribute.
+ */
+ if( markup.iCode==MARKUP_DIV ){
+ pushStackWithId(&renderer, markup.iCode, markupId(&markup),
+ (renderer.state & ALLOW_WIKI)!=0);
+ }else
+
+ /* Enter <verbatim> processing. With verbatim enabled, all other
+ ** markup other than the corresponding end-tag with the same ID is
+ ** ignored.
+ */
+ if( markup.iCode==MARKUP_VERBATIM ){
+ int vAttrIdx;
+ renderer.zVerbatimId = 0;
+ renderer.inVerbatim = 1;
+ renderer.preVerbState = renderer.state;
+ renderer.state &= ~ALLOW_WIKI;
+ for (vAttrIdx = 0; vAttrIdx < markup.nAttr; vAttrIdx++){
+ if( markup.aAttr[vAttrIdx].iACode == ATTR_ID ){
+ renderer.zVerbatimId = markup.aAttr[0].zValue;
+ }
+ }
+ renderer.wantAutoParagraph = 0;
+ }
+
+ /* Restore the input text to its original configuration
+ */
+ unparseMarkup(&markup);
+ break;
+ }
+ default: {
+ break;
+ }
+ }
+ z += n;
+ }
+ free(renderer.aStack);
+ return renderer.mRender;
+}
+
+/*
+** Return the length, in bytes, of the HTML token that z is pointing to.
+*/
+int html_token_length(const char *z){
+ int n;
+ char c;
+ if( (c=z[0])=='<' ){
+ n = html_tag_length(z);
+ if( n<=0 ) n = 1;
+ }else if( fossil_isspace(c) ){
+ for(n=1; z[n] && fossil_isspace(z[n]); n++){}
+ }else if( c=='&' ){
+ n = z[1]=='#' ? 2 : 1;
+ while( fossil_isalnum(z[n]) ) n++;
+ if( z[n]==';' ) n++;
+ }else{
+ n = 1;
+ for(n=1; 1; n++){
+ if( (c = z[n]) > '<' ) continue;
+ if( c=='<' || c=='&' || fossil_isspace(c) || c==0 ) break;
+ }
+ }
+ return n;
+}
+
+/*
+** z points to someplace in the middle of HTML markup. Return the length
+** of the subtoken that starts on z.
+*/
+int html_subtoken_length(const char *z){
+ int n;
+ char c;
+ c = z[0];
+ if( fossil_isspace(c) ){
+ for(n=1; z[n] && fossil_isspace(z[n]); n++){}
+ return n;
+ }
+ if( c=='"' || c=='\'' ){
+ for(n=1; z[n] && z[n]!=c && z[n]!='>'; n++){}
+ if( z[n]==c ) n++;
+ return n;
+ }
+ if( c=='>' ){
+ return 0;
+ }
+ if( c=='=' ){
+ return 1;
+ }
+ if( fossil_isalnum(c) || c=='/' ){
+ for(n=1; (c=z[n])!=0 && (fossil_isalnum(c) || c=='-' || c=='_'); n++){}
+ return n;
+ }
+ return 1;
+}
+
+/*
+** z points to an HTML markup token: <TAG ATTR=VALUE ...>
+** This routine looks for the VALUE associated with zAttr and returns
+** a pointer to the start of that value and sets *pLen to be the length
+** in bytes for the value. Or it returns NULL if no such attr exists.
+*/
+const char *html_attribute(const char *zMarkup, const char *zAttr, int *pLen){
+ int i = 1;
+ int n;
+ int nAttr;
+ int iMatchCnt = 0;
+ assert( zMarkup[0]=='<' );
+ assert( zMarkup[1]!=0 );
+ n = html_subtoken_length(zMarkup+i);
+ if( n==0 ) return 0;
+ i += n;
+ nAttr = (int)strlen(zAttr);
+ while( 1 ){
+ const char *zStart = zMarkup+i;
+ n = html_subtoken_length(zStart);
+ if( n==0 ) break;
+ i += n;
+ if( fossil_isspace(zStart[0]) ) continue;
+ if( n==nAttr && fossil_strnicmp(zAttr,zStart,nAttr)==0 ){
+ iMatchCnt = 1;
+ }else if( n==1 && zStart[0]=='=' && iMatchCnt==1 ){
+ iMatchCnt = 2;
+ }else if( iMatchCnt==2 ){
+ if( (zStart[0]=='"' || zStart[0]=='\'') && zStart[n-1]==zStart[0] ){
+ zStart++;
+ n -= 2;
+ }
+ *pLen = n;
+ return zStart;
+ }else{
+ iMatchCnt = 0;
+ }
+ }
+ return 0;
+}
+
+/*
+** COMMAND: test-html-tokenize
+**
+** Tokenize an HTML file. Return the offset and length and text of
+** each token - one token per line. Omit white-space tokens.
+*/
+void test_html_tokenize(void){
+ Blob in;
+ char *z;
+ int i;
+ int iOfst, n;
+
+ for(i=2; i<g.argc; i++){
+ blob_read_from_file(&in, g.argv[i], ExtFILE);
+ z = blob_str(&in);
+ for(iOfst=0; z[iOfst]; iOfst+=n){
+ n = html_token_length(z+iOfst);
+ if( fossil_isspace(z[iOfst]) ) continue;
+ fossil_print("%d %d %.*s\n", iOfst, n, n, z+iOfst);
+ if( z[iOfst]=='<' && n>1 ){
+ int j,k;
+ for(j=iOfst+1; (k = html_subtoken_length(z+j))>0; j+=k){
+ if( fossil_isspace(z[j]) || z[j]=='=' ) continue;
+ fossil_print("# %d %d %.*s\n", j, k, k, z+j);
+ }
+ }
+ }
+ blob_reset(&in);
+ }
+}
+
+/*
+** Attempt to reformat messy HTML to be easily readable by humans.
+**
+** * Try to keep lines less than 80 characters in length
+** * Collapse white space into a single space
+** * Put a blank line before:
+** <blockquote><center><code><hN><p><pre><table>
+** * Put a newline after <br> and <hr>
+** * Start each of the following elements on a new line:
+** <address><cite><dd><div><dl><dt><li><ol><samp>
+** <tbody><td><tfoot><th><thead><tr><ul>
+**
+** Except, do not do any reformatting inside of <pre>...</pre>
+*/
+void htmlTidy(const char *zIn, Blob *pOut){
+ int n;
+ int nPre = 0;
+ int iCur = 0;
+ int wantSpace = 0;
+ int omitSpace = 1;
+ while( zIn[0] ){
+ n = html_token_length(zIn);
+ if( zIn[0]=='<' && n>1 ){
+ int i, j;
+ int isCloseTag;
+ int eTag;
+ int eType;
+ char zTag[32];
+ isCloseTag = zIn[1]=='/';
+ for(i=0, j=1+isCloseTag; i<30 && fossil_isalnum(zIn[j]); i++, j++){
+ zTag[i] = fossil_tolower(zIn[j]);
+ }
+ zTag[i] = 0;
+ eTag = findTag(zTag);
+ eType = aMarkup[eTag].iType;
+ if( eTag==MARKUP_PRE ){
+ if( isCloseTag ){
+ nPre--;
+ blob_append(pOut, zIn, n);
+ zIn += n;
+ if( nPre==0 ){ blob_append_char(pOut, '\n'); iCur = 0; }
+ continue;
+ }else{
+ if( iCur && nPre==0 ){ blob_append_char(pOut, '\n'); iCur = 0; }
+ nPre++;
+ }
+ }else if( eType & (MUTYPE_BLOCK|MUTYPE_TABLE) ){
+ if( !isCloseTag && nPre==0 && blob_size(pOut)>0 ){
+ blob_append(pOut, "\n\n", 1 + (iCur>0));
+ iCur = 0;
+ }
+ wantSpace = 0;
+ omitSpace = 1;
+ }else if( (eType & (MUTYPE_LIST|MUTYPE_LI|MUTYPE_TR|MUTYPE_TD))!=0
+ || eTag==MARKUP_HR
+ ){
+ if( nPre==0 && (!isCloseTag || (eType&MUTYPE_LIST)!=0) && iCur>0 ){
+ blob_append_char(pOut, '\n');
+ iCur = 0;
+ }
+ wantSpace = 0;
+ omitSpace = 1;
+ }
+ if( wantSpace && nPre==0 ){
+ if( iCur+n+1>=80 ){
+ blob_append_char(pOut, '\n');
+ iCur = 0;
+ }else{
+ blob_append_char(pOut, ' ');
+ iCur++;
+ }
+ }
+ blob_append(pOut, zIn, n);
+ iCur += n;
+ wantSpace = 0;
+ if( eTag==MARKUP_BR || eTag==MARKUP_HR ){
+ blob_append_char(pOut, '\n');
+ iCur = 0;
+ }
+ }else if( fossil_isspace(zIn[0]) ){
+ if( nPre ){
+ blob_append(pOut, zIn, n);
+ }else{
+ wantSpace = !omitSpace;
+ }
+ }else{
+ if( wantSpace && nPre==0 ){
+ if( iCur+n+1>=80 ){
+ blob_append_char(pOut, '\n');
+ iCur = 0;
+ }else{
+ blob_append_char(pOut, ' ');
+ iCur++;
+ }
+ }
+ blob_append(pOut, zIn, n);
+ iCur += n;
+ wantSpace = omitSpace = 0;
+ }
+ zIn += n;
+ }
+ if( iCur ) blob_append_char(pOut, '\n');
+}
+
+/*
+** COMMAND: test-html-tidy
+**
+** Run the htmlTidy() routine on the content of all files named on
+** the command-line and write the results to standard output.
+*/
+void test_html_tidy(void){
+ Blob in, out;
+ int i;
+
+ for(i=2; i<g.argc; i++){
+ blob_read_from_file(&in, g.argv[i], ExtFILE);
+ blob_zero(&out);
+ htmlTidy(blob_str(&in), &out);
+ blob_reset(&in);
+ fossil_puts(blob_buffer(&out), 0, blob_size(&out));
+ blob_reset(&out);
+ }
+}
+
+#if INTERFACE
+/*
+** Allowed flag options for html_to_plaintext().
+*/
+#define HTOT_VT100 0x01 /* <mark> becomes ^[[91m */
+#define HTOT_FLOW 0x02 /* Collapse internal whitespace to a single space */
+#define HTOT_TRIM 0x04 /* Trim off leading and trailing whitespace */
+
+#endif /* INTERFACE */
+
+/*
+** Add <MARK> or </MARK> to the output, or similar VT-100 escape
+** codes.
+*/
+static void addMark(Blob *pOut, int mFlags, int isClose){
+ static const char *az[4] = { "<MARK>", "</MARK>", "\033[91m", "\033[0m" };
+ int i = 0;
+ if( isClose ) i++;
+ if( mFlags & HTOT_VT100 ) i += 2;
+ blob_append(pOut, az[i], -1);
+}
+
+/*
+** Remove all HTML markup from the input text. The output written into
+** pOut is pure text.
+**
+** Put the title on the first line, if there is any <title> markup.
+** If there is no <title>, then create a blank first line.
+*/
+void html_to_plaintext(const char *zIn, Blob *pOut, int mFlags){
+ int n;
+ int i, j;
+ int bFlow = 0; /* Transform internal WS into a single space */
+ int prevWS = 1; /* Previous output was whitespace or start of msg */
+ int nMark = 0; /* True if inside of <mark>..</mark> */
+
+ for(i=0; fossil_isspace(zIn[i]); i++){}
+ if( i>0 && (mFlags & HTOT_TRIM)==0 ){
+ blob_append(pOut, zIn, i);
+ }
+ zIn += i;
+ if( mFlags & HTOT_FLOW ) bFlow = 1;
+ while( zIn[0] ){
+ n = html_token_length(zIn);
+ if( zIn[0]=='<' && n>1 ){
+ int isCloseTag;
+ int eTag;
+ int eType;
+ char zTag[32];
+ prevWS = 0;
+ isCloseTag = zIn[1]=='/';
+ for(i=0, j=1+isCloseTag; i<30 && fossil_isalnum(zIn[j]); i++, j++){
+ zTag[i] = fossil_tolower(zIn[j]);
+ }
+ zTag[i] = 0;
+ eTag = findTag(zTag);
+ eType = aMarkup[eTag].iType;
+ if( eTag==MARKUP_INVALID && fossil_strnicmp(zIn,"<style",6)==0 ){
+ zIn += n;
+ while( zIn[0] ){
+ n = html_token_length(zIn);
+ if( fossil_strnicmp(zIn, "</style",7)==0 ) break;
+ zIn += n;
+ }
+ if( zIn[0]=='<' ) zIn += n;
+ continue;
+ }
+ if( eTag==MARKUP_INVALID && strcmp(zTag,"mark")==0 ){
+ if( isCloseTag && nMark ){
+ addMark(pOut, mFlags, 1);
+ nMark = 0;
+ }else if( !isCloseTag && !nMark ){
+ addMark(pOut, mFlags, 0);
+ nMark = 1;
+ }
+ zIn += n;
+ continue;
+ }
+ if( eTag==MARKUP_TITLE ){
+ if( isCloseTag && (mFlags & HTOT_FLOW)==0 ){
+ bFlow = 0;
+ }else{
+ bFlow = 1;
+ }
+ }
+ if( !isCloseTag && (eType & (MUTYPE_BLOCK|MUTYPE_TABLE))!=0 ){
+ blob_append_char(pOut, '\n');
+ }
+ }else if( fossil_isspace(zIn[0]) ){
+ if( bFlow==0 ){
+ if( zIn[n]==0 && (mFlags & HTOT_TRIM) ) break;
+ blob_append(pOut, zIn, n);
+ }else if( !prevWS ){
+ prevWS = 1;
+ blob_append_char(pOut, ' ');
+ zIn += n;
+ n = 0;
+ }
+ }else if( zIn[0]=='&' ){
+ u32 c = '?';
+ prevWS = 0;
+ if( zIn[1]=='#' ){
+ c = atoi(&zIn[2]);
+ if( c==0 ) c = '?';
+ }else{
+ static const struct { int n; u32 c; char *z; } aEntity[] = {
+ { 5, '&', "&amp;" },
+ { 4, '<', "&lt;" },
+ { 4, '>', "&gt;" },
+ { 6, ' ', "&nbsp;" },
+ { 6, '"', "&quot;" },
+ };
+ int jj;
+ for(jj=0; jj<count(aEntity); jj++){
+ if( aEntity[jj].n==n && strncmp(aEntity[jj].z,zIn,n)==0 ){
+ c = aEntity[jj].c;
+ break;
+ }
+ }
+ }
+ if( c<0x00080 ){
+ blob_append_char(pOut, c & 0xff);
+ }else if( c<0x00800 ){
+ blob_append_char(pOut, 0xc0 + (u8)((c>>6)&0x1f));
+ blob_append_char(pOut, 0x80 + (u8)(c&0x3f));
+ }else if( c<0x10000 ){
+ blob_append_char(pOut, 0xe0 + (u8)((c>>12)&0x0f));
+ blob_append_char(pOut, 0x80 + (u8)((c>>6)&0x3f));
+ blob_append_char(pOut, 0x80 + (u8)(c&0x3f));
+ }else{
+ blob_append_char(pOut, 0xf0 + (u8)((c>>18)&0x07));
+ blob_append_char(pOut, 0x80 + (u8)((c>>12)&0x3f));
+ blob_append_char(pOut, 0x80 + (u8)((c>>6)&0x3f));
+ blob_append_char(pOut, 0x80 + (u8)(c&0x3f));
+ }
+ }else{
+ prevWS = 0;
+ blob_append(pOut, zIn, n);
+ }
+ zIn += n;
+ }
+ if( nMark ){
+ addMark(pOut, mFlags, 1);
+ }
+}
+
+/*
+** COMMAND: test-html-to-text
+**
+** Usage: %fossil test-html-to-text [OPTIONS] FILE ...
+**
+** Read all files named on the command-line. Convert the file
+** content from HTML to text and write the results on standard
+** output.
+**
+** This command is intended as a test and debug interface for
+** the html_to_plaintext() routine.
+**
+** Options:
+**
+** --vt100 Translate <mark> and </mark> into ANSI/VT100
+** escapes to highlight the contained text.
+*/
+void test_html_to_text(void){
+ Blob in, out;
+ int i;
+ int mFlags = 0;
+ if( find_option("vt100",0,0)!=0 ) mFlags |= HTOT_VT100;
+
+ for(i=2; i<g.argc; i++){
+ blob_read_from_file(&in, g.argv[i], ExtFILE);
+ blob_zero(&out);
+ html_to_plaintext(blob_str(&in), &out, mFlags);
+ blob_reset(&in);
+ fossil_puts(blob_buffer(&out), 0, blob_size(&out));
+ blob_reset(&out);
+ }
+}
+
+/****************************************************************************
+** safe-html:
+**
+** An interface for preventing HTML constructs (ex: <style>, <form>, etc)
+** from being inserted into Wiki and Forum posts using Markdown. See the
+** comment on safe_html_append() for additional information on what is meant
+** by "safe".
+**
+** The safe-html restrictions only apply to Markdown, as Fossil-Wiki only
+** allows safe-html by design - unsafe-HTML is never and has never been
+** allowed in Fossil-Wiki.
+**
+** This code is in the wikiformat.c file so that it can have access to the
+** white-list of acceptable HTML in the aMarkup[] array.
+*/
+
+/*
+** An instance of this object keeps track of the nesting of HTML
+** elements for safe_html_append().
+*/
+typedef struct HtmlTagStack HtmlTagStack;
+struct HtmlTagStack {
+ int n; /* Current tag stack depth */
+ int nAlloc; /* Space allocated for aStack[] */
+ int *aStack; /* The stack of tags */
+ int aSpace[10]; /* Initial static space, to avoid malloc() */
+};
+
+/*
+** Initialize bulk memory to a valid empty tagstack.
+*/
+static void html_tagstack_init(HtmlTagStack *p){
+ p->n = 0;
+ p->nAlloc = 0;
+ p->aStack = p->aSpace;
+}
+
+/*
+** Push a new element onto the tag stack
+*/
+static void html_tagstack_push(HtmlTagStack *p, int e){
+ if( p->n>=ArraySize(p->aSpace) && p->n>=p->nAlloc ){
+ if( p->nAlloc==0 ){
+ int *aNew;
+ p->nAlloc = 50;
+ aNew = fossil_malloc( sizeof(p->aStack[0])*p->nAlloc );
+ memcpy(aNew, p->aStack, sizeof(p->aStack[0])*p->n );
+ p->aStack = aNew;
+ }else{
+ p->nAlloc *= 2;
+ p->aStack = fossil_realloc(p->aStack, sizeof(p->aStack[0])*p->nAlloc );
+ }
+ }
+ p->aStack[p->n++] = e;
+}
+
+/*
+** Clear a tag stack, reclaiming any memory allocations.
+*/
+static void html_tagstack_clear(HtmlTagStack *p){
+ if( p->nAlloc ){
+ fossil_free(p->aStack);
+ p->nAlloc = 0;
+ p->aStack = p->aSpace;
+ }
+ p->n = 0;
+}
+
+/*
+** The HTML end-tag eEnd wants to be added to pBlob.
+**
+** If an open-tag for eEnd exists anywhere on the stack, then
+** pop it and all prior elements from the task, issuing appropriate
+** end-tags as you go.
+**
+** If there is no open-tag for eEnd on the stack, then this
+** routine is a no-op.
+*/
+static void html_tagstack_pop(HtmlTagStack *p, Blob *pBlob, int eEnd){
+ int i, e;
+ if( eEnd!=0 ){
+ for(i=p->n-1; i>=0 && p->aStack[i]!=eEnd; i--){}
+ if( i<0 ){
+ blob_appendf(pBlob, "<span class='error'>&lt;/%s&gt;</span>",
+ aMarkup[eEnd].zName);
+ return;
+ }
+ }else if( p->n==0 ){
+ return;
+ }
+ do{
+ e = p->aStack[--p->n];
+ if( e==eEnd || (aMarkup[e].iType & MUTYPE_Nested)!=0 ){
+ blob_appendf(pBlob, "</%s>", aMarkup[e].zName);
+ }
+ }while( e!=eEnd && p->n>0 );
+}
+
+/*
+** Return a nonce to indicate that safe_html() can allow code through
+** without censoring.
+**
+** When safe_html() is asked to sanitize some HTML, it will ignore
+** any text in between two consecutive instances of the nonce. The
+** nonce itself is an HTML comment so it is harmless to keep the
+** nonce in the middle of the HTML stream. A different nonce is
+** chosen each time Fossil is run, using a lot of randomness, so
+** an attacker will be unable to guess the nonce in advance.
+**
+** The original use-case for this mechanism is to allow Pikchr-generated
+** SVG in the middle of HTML generated from Markdown. The Markdown
+** output will normally be processed by safe_html() to prevent accidental
+** or malicious introduction of harmful HTML (ex: <script>) in the
+** output stream. The safe_html() only lets through HTML elements
+** that are on its allow-list and SVG is not on that list. Hence, in order
+** to allow the Pikchr-generated SVG through, it must be surrounded by
+** the nonce.
+*/
+const char *safe_html_nonce(int bGenerate){
+ static char *zNonce = 0;
+ if( zNonce==0 && bGenerate ){
+ zNonce = db_text(0, "SELECT '<!--'||hex(randomblob(32))||'-->';");
+ }
+ return zNonce;
+}
+#define SAFE_NONCE_SIZE (4+64+3)
+
+/*
+** Append a safe translation of HTML text to a Blob object.
+**
+** Restriction: The input to this routine must be writable.
+* Temporary changes may be made to the input, but the input is restored
+** to its original state prior to returning. If zHtml[nHtml] is not a
+** zero character, then a zero might be written in that position
+** temporarily, but that slot will also be restored before this routine
+** returns.
+*/
+static void safe_html_append(Blob *pBlob, char *zHtml, int nHtml){
+ char cLast;
+ int i, j, n;
+ HtmlTagStack s;
+ ParsedMarkup markup;
+ const char *zNonce;
+ char *z;
+
+ if( nHtml<=0 ) return;
+ cLast = zHtml[nHtml];
+ zHtml[nHtml] = 0;
+ html_tagstack_init(&s);
+
+ i = 0;
+ while( i<nHtml ){
+ if( zHtml[i]=='<' ){
+ j = i;
+ }else{
+ z = strchr(zHtml+i, '<');
+ if( z==0 ){
+ blob_append(pBlob, zHtml+i, nHtml-i);
+ break;
+ }
+ j = (int)(z - zHtml);
+ blob_append(pBlob, zHtml+i, j-i);
+ }
+ if( zHtml[j+1]=='!'
+ && j+2*SAFE_NONCE_SIZE<nHtml
+ && (zNonce = safe_html_nonce(0))!=0
+ && strncmp(zHtml+j,zNonce,SAFE_NONCE_SIZE)==0
+ && (z = strstr(zHtml+j+SAFE_NONCE_SIZE,zNonce))!=0
+ ){
+ i = (int)(z - zHtml) + SAFE_NONCE_SIZE;
+ blob_append(pBlob, zHtml+j, i-j);
+ continue;
+ }
+ n = html_tag_length(zHtml+j);
+ if( n==0 ){
+ blob_append(pBlob, "&lt;", 4);
+ i = j+1;
+ continue;
+ }else{
+ i = j + n;
+ }
+ parseMarkup(&markup, zHtml+j);
+ if( markup.iCode==MARKUP_INVALID ){
+ unparseMarkup(&markup);
+ blob_appendf(pBlob, "<span class='error'>&lt;%.*s&gt;</span>",
+ n-2, zHtml+j+1);
+ continue;
+ }
+ if( (markup.iType & MUTYPE_Nested)==0 || markup.iCode==MARKUP_P ){
+ renderMarkup(pBlob, &markup);
+ }else{
+ if( markup.endTag ){
+ html_tagstack_pop(&s, pBlob, markup.iCode);
+ }else{
+ renderMarkup(pBlob, &markup);
+ html_tagstack_push(&s, markup.iCode);
+ }
+ }
+ unparseMarkup(&markup);
+ }
+ html_tagstack_pop(&s, pBlob, 0);
+ html_tagstack_clear(&s);
+ zHtml[nHtml] = cLast;
+}
+
+/*
+** This local variable is true if the safe_html() function is enabled.
+** In other words, this is true if the output of Markdown should be
+** restricted to use only "safe" HTML.
+*/
+static int safeHtmlEnable = 1;
+
+
+#if INTERFACE
+/*
+** Allowed values for the eTrust parameter to safe_html_context().
+*/
+#define DOCSRC_FILE 1 /* Document is a checked-in file */
+#define DOCSRC_FORUM 2 /* Document is a forum post */
+#define DOCSRC_TICKET 3 /* Document is a ticket comment */
+#define DOCSRC_WIKI 4 /* Document is a wiki page */
+#define DOCSRC_TRUSTED 5 /* safe_html() is always a no-op */
+#define DOCSRC_UNTRUSTED 6 /* safe_html() is always enabled */
+#endif /* INTERFACE */
+
+
+/*
+** Specify the context in which a markdown document with potentially
+** unsafe HTML will be rendered.
+*/
+void safe_html_context(int eTrust){
+ static const char *zSafeHtmlSetting = 0;
+ char cPerm = 0;
+ if( eTrust==DOCSRC_TRUSTED ){
+ safeHtmlEnable = 0;
+ return;
+ }
+ if( eTrust==DOCSRC_UNTRUSTED ){
+ safeHtmlEnable = 1;
+ return;
+ }
+ if( zSafeHtmlSetting==0 ){
+ zSafeHtmlSetting = db_get("safe-html", "");
+ }
+ switch( eTrust ){
+ case DOCSRC_FILE: cPerm = 'b'; break;
+ case DOCSRC_FORUM: cPerm = 'f'; break;
+ case DOCSRC_TICKET: cPerm = 't'; break;
+ case DOCSRC_WIKI: cPerm = 'w'; break;
+ }
+ safeHtmlEnable = (strchr(zSafeHtmlSetting,cPerm)==0);
+}
+
+/*
+** SETTING: safe-html width=8
+** This setting controls whether or not unsafe HTML elements
+** (such as SCRIPT or STYLE tags) are allowed in Markdown-formatted
+** documents. Unsafe HTML is disabled by default. If this setting
+** exists and is a string, then letters in that string can enable
+** unsafe HTML in various contexts:
+**
+** - b Unsafe HTML allowed in embedded documentation
+** - f Unsafe HTML allowed in forum posts
+** - t Unsafe HTML allowed in tickets
+** - w Unsafe HTML allowed on wiki pages
+*/
+/*
+** The input blob contains HTML. If safe-html is enabled, then
+** convert the input into "safe HTML". The following modifications
+** are made:
+**
+** 1. Remove any elements that are not on the AllowedMarkup list.
+** (ex: <script>, <form>, etc.)
+**
+** 2. Remove any attributes that are not on the AllowedMarkup list.
+** (ex: onload=, etc.)
+**
+** 3. Omit any surplus close-tags. This prevents the script from
+** terminating an <div> or similar in the outer context.
+**
+** 4. Insert additional close-tags as necessary so that any
+** tag in the input that needs a close-tag has one. This
+** prevents tags in the embedded script from affecting the
+** display of content that follows this script in the enclosing
+** context.
+**
+** These modifications are intended to make the generated HTML safe
+** to be embedded in a larger HTML document, such that the embedded
+** HTML has no influence on the formatting and operation of the
+** larger document.
+**
+** If safe-html is disabled, then this routine is a no-op.
+*/
+void safe_html(Blob *in){
+ Blob out; /* Holding area for the revised text during construction */
+ char *z; /* Original input text */
+ int n; /* Number of bytes in the original input text */
+ int k;
+
+ if( safeHtmlEnable==0 ) return;
+ z = blob_str(in);
+ n = blob_size(in);
+ blob_init(&out, 0, 0);
+ while( fossil_isspace(z[0]) ){ z++; n--; }
+ for(k=n-1; k>5 && fossil_isspace(z[k]); k--){}
+
+ if( fossil_strnicmp(z, "<div",4)==0 && !fossil_isalpha(z[4])
+ && fossil_strnicmp(z+k-5, "</div>",6)==0
+ ){
+ /* The input contains an outer <div>...</div>. Preserve the
+ ** full scope of that <div>. */
+ int m = html_tag_length(z);
+ k -= 5;
+ blob_append(&out, z, m);
+ safe_html_append(&out, z+m, k-m);
+ blob_append(&out, z+k, n-k);
+ }else{
+ safe_html_append(&out, z, n);
+ }
+ blob_reset(in);
+ *in = out;
+}
+
+/*
+** COMMAND: test-safe-html
+**
+** Usage: %fossil test-safe-html ?OPTIONS? FILE ...
+**
+** Read files named on the command-line. Send the text of each file
+** through safe_html_append() and then write the result on
+** standard output.
+**
+** Options:
+** --top PATH Use PATH as g.zTop when rewriting root-relative URLs
+*/
+void test_safe_html_cmd(void){
+ int i;
+ Blob x;
+ const char *zTop = find_option("top",0,1);
+ verify_all_options();
+ if( zTop ) g.zTop = (char*)zTop;
+ for(i=2; i<g.argc; i++){
+ char *z;
+ int n;
+ blob_read_from_file(&x, g.argv[i], ExtFILE);
+ blob_terminate(&x);
+ safe_html(&x);
+ z = blob_str(&x);
+ n = blob_size(&x);
+ while( n>0 && (z[n-1]=='\n' || z[n-1]=='\r') ) n--;
+ fossil_print("%.*s\n", n, z);
+ blob_reset(&x);
+ }
+}
generated by cgit v1.3.1 (git 2.54.0) at 2026-10-17 06:27:51 +0000