initial commitHEADmaster

1 files changed, 96 insertions, 0 deletions

diff --git a/src/json_query.c b/src/json_query.c
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+#ifdef FOSSIL_ENABLE_JSON
+/*
+** Copyright (c) 2011 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/
+**
+*/
+
+#include "config.h"
+#include "json_query.h"
+
+#if INTERFACE
+#include "json_detail.h"
+#endif
+
+
+/*
+** Implementation of the /json/query page.
+**
+** Requires admin privileges. Intended primarily to assist me in
+** coming up with JSON output structures for pending features.
+**
+** Options/parameters:
+**
+** sql=string - a SELECT statement
+**
+** format=string 'a' means each row is an Array of values, 'o'
+** (default) creates each row as an Object.
+**
+** TODO: in CLI mode (only) use -S FILENAME to read the sql
+** from a file.
+*/
+cson_value * json_page_query(void){
+  char const * zSql = NULL;
+  cson_value * payV;
+  char const * zFmt;
+  Stmt q = empty_Stmt;
+  int check;
+  if(!g.perm.Admin && !g.perm.Setup){
+    json_set_err(FSL_JSON_E_DENIED,
+                 "Requires 'a' or 's' privileges.");
+    return NULL;
+  }
+
+  if( cson_value_is_string(g.json.reqPayload.v) ){
+    zSql = cson_string_cstr(cson_value_get_string(g.json.reqPayload.v));
+  }else{
+    zSql = json_find_option_cstr2("sql",NULL,"s",2);
+  }
+
+  if(!zSql || !*zSql){
+    json_set_err(FSL_JSON_E_MISSING_ARGS,
+                 "'sql' (-s) argument is missing.");
+    return NULL;
+  }
+
+  zFmt = json_find_option_cstr2("format",NULL,"f",3);
+  if(!zFmt) zFmt = "o";
+  db_prepare(&q,"%s", zSql/*safe-for-%s*/);
+  if( 0 == sqlite3_column_count( q.pStmt ) ){
+      json_set_err(FSL_JSON_E_USAGE,
+                   "Input query has no result columns. "
+                   "Only SELECT-like queries are supported.");
+      db_finalize(&q);
+      return NULL;
+  }
+  switch(*zFmt){
+    case 'a':
+      check = cson_sqlite3_stmt_to_json(q.pStmt, &payV, 0);
+      break;
+    case 'o':
+    default:
+      check = cson_sqlite3_stmt_to_json(q.pStmt, &payV, 1);
+  };
+  db_finalize(&q);
+  if(0 != check){
+    json_set_err(FSL_JSON_E_UNKNOWN,
+                 "Conversion to JSON failed with cson code #%d (%s).",
+                 check, cson_rc_string(check));
+    assert(NULL==payV);
+  }
+  return payV;
+
+}
+
+#endif /* FOSSIL_ENABLE_JSON */