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-rw-r--r--jsmn.c457
1 files changed, 245 insertions, 212 deletions
diff --git a/jsmn.c b/jsmn.c
index 4f8f032..bcd6392 100644
--- a/jsmn.c
+++ b/jsmn.c
@@ -1,23 +1,21 @@
-#include <stdlib.h>
-
#include "jsmn.h"
/**
* Allocates a fresh unused token from the token pull.
*/
static jsmntok_t *jsmn_alloc_token(jsmn_parser *parser,
- jsmntok_t *tokens, size_t num_tokens) {
- jsmntok_t *tok;
- if (parser->toknext >= num_tokens) {
- return NULL;
- }
- tok = &tokens[parser->toknext++];
- tok->start = tok->end = -1;
- tok->size = 0;
+ jsmntok_t *tokens, size_t num_tokens) {
+ jsmntok_t *tok;
+ if (parser->toknext >= num_tokens) {
+ return NULL;
+ }
+ tok = &tokens[parser->toknext++];
+ tok->start = tok->end = -1;
+ tok->size = 0;
#ifdef JSMN_PARENT_LINKS
- tok->parent = -1;
+ tok->parent = -1;
#endif
- return tok;
+ return tok;
}
/**
@@ -25,249 +23,283 @@ static jsmntok_t *jsmn_alloc_token(jsmn_parser *parser,
*/
static void jsmn_fill_token(jsmntok_t *token, jsmntype_t type,
int start, int end) {
- token->type = type;
- token->start = start;
- token->end = end;
- token->size = 0;
+ token->type = type;
+ token->start = start;
+ token->end = end;
+ token->size = 0;
}
/**
* Fills next available token with JSON primitive.
*/
-static jsmnerr_t jsmn_parse_primitive(jsmn_parser *parser, const char *js,
- size_t len, jsmntok_t *tokens, size_t num_tokens) {
- jsmntok_t *token;
- int start;
+static int jsmn_parse_primitive(jsmn_parser *parser, const char *js,
+ size_t len, jsmntok_t *tokens, size_t num_tokens) {
+ jsmntok_t *token;
+ int start;
- start = parser->pos;
+ start = parser->pos;
- for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
- switch (js[parser->pos]) {
+ for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
+ switch (js[parser->pos]) {
#ifndef JSMN_STRICT
- /* In strict mode primitive must be followed by "," or "}" or "]" */
- case ':':
+ /* In strict mode primitive must be followed by "," or "}" or "]" */
+ case ':':
#endif
- case '\t' : case '\r' : case '\n' : case ' ' :
- case ',' : case ']' : case '}' :
- goto found;
- }
- if (js[parser->pos] < 32 || js[parser->pos] >= 127) {
- parser->pos = start;
- return JSMN_ERROR_INVAL;
- }
- }
+ case '\t' : case '\r' : case '\n' : case ' ' :
+ case ',' : case ']' : case '}' :
+ goto found;
+ }
+ if (js[parser->pos] < 32 || js[parser->pos] >= 127) {
+ parser->pos = start;
+ return JSMN_ERROR_INVAL;
+ }
+ }
#ifdef JSMN_STRICT
- /* In strict mode primitive must be followed by a comma/object/array */
- parser->pos = start;
- return JSMN_ERROR_PART;
+ /* In strict mode primitive must be followed by a comma/object/array */
+ parser->pos = start;
+ return JSMN_ERROR_PART;
#endif
found:
- if (tokens == NULL) {
- parser->pos--;
- return 0;
- }
- token = jsmn_alloc_token(parser, tokens, num_tokens);
- if (token == NULL) {
- parser->pos = start;
- return JSMN_ERROR_NOMEM;
- }
- jsmn_fill_token(token, JSMN_PRIMITIVE, start, parser->pos);
+ if (tokens == NULL) {
+ parser->pos--;
+ return 0;
+ }
+ token = jsmn_alloc_token(parser, tokens, num_tokens);
+ if (token == NULL) {
+ parser->pos = start;
+ return JSMN_ERROR_NOMEM;
+ }
+ jsmn_fill_token(token, JSMN_PRIMITIVE, start, parser->pos);
#ifdef JSMN_PARENT_LINKS
- token->parent = parser->toksuper;
+ token->parent = parser->toksuper;
#endif
- parser->pos--;
- return 0;
+ parser->pos--;
+ return 0;
}
/**
- * Filsl next token with JSON string.
+ * Fills next token with JSON string.
*/
-static jsmnerr_t jsmn_parse_string(jsmn_parser *parser, const char *js,
- size_t len, jsmntok_t *tokens, size_t num_tokens) {
- jsmntok_t *token;
+static int jsmn_parse_string(jsmn_parser *parser, const char *js,
+ size_t len, jsmntok_t *tokens, size_t num_tokens) {
+ jsmntok_t *token;
- int start = parser->pos;
+ int start = parser->pos;
- parser->pos++;
+ parser->pos++;
- /* Skip starting quote */
- for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
- char c = js[parser->pos];
+ /* Skip starting quote */
+ for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
+ char c = js[parser->pos];
- /* Quote: end of string */
- if (c == '\"') {
- if (tokens == NULL) {
- return 0;
- }
- token = jsmn_alloc_token(parser, tokens, num_tokens);
- if (token == NULL) {
- parser->pos = start;
- return JSMN_ERROR_NOMEM;
- }
- jsmn_fill_token(token, JSMN_STRING, start+1, parser->pos);
+ /* Quote: end of string */
+ if (c == '\"') {
+ if (tokens == NULL) {
+ return 0;
+ }
+ token = jsmn_alloc_token(parser, tokens, num_tokens);
+ if (token == NULL) {
+ parser->pos = start;
+ return JSMN_ERROR_NOMEM;
+ }
+ jsmn_fill_token(token, JSMN_STRING, start+1, parser->pos);
#ifdef JSMN_PARENT_LINKS
- token->parent = parser->toksuper;
+ token->parent = parser->toksuper;
#endif
- return 0;
- }
+ return 0;
+ }
- /* Backslash: Quoted symbol expected */
- if (c == '\\') {
- parser->pos++;
- switch (js[parser->pos]) {
- /* Allowed escaped symbols */
- case '\"': case '/' : case '\\' : case 'b' :
- case 'f' : case 'r' : case 'n' : case 't' :
- break;
- /* Allows escaped symbol \uXXXX */
- case 'u':
- parser->pos++;
- int i = 0;
- for(; i < 4 && js[parser->pos] != '\0'; i++) {
- /* If it isn't a hex character we have an error */
- if(!((js[parser->pos] >= 48 && js[parser->pos] <= 57) || /* 0-9 */
- (js[parser->pos] >= 65 && js[parser->pos] <= 70) || /* A-F */
- (js[parser->pos] >= 97 && js[parser->pos] <= 102))) { /* a-f */
- parser->pos = start;
- return JSMN_ERROR_INVAL;
- }
- parser->pos++;
- }
- parser->pos--;
- break;
- /* Unexpected symbol */
- default:
- parser->pos = start;
- return JSMN_ERROR_INVAL;
- }
- }
- }
- parser->pos = start;
- return JSMN_ERROR_PART;
+ /* Backslash: Quoted symbol expected */
+ if (c == '\\' && parser->pos + 1 < len) {
+ int i;
+ parser->pos++;
+ switch (js[parser->pos]) {
+ /* Allowed escaped symbols */
+ case '\"': case '/' : case '\\' : case 'b' :
+ case 'f' : case 'r' : case 'n' : case 't' :
+ break;
+ /* Allows escaped symbol \uXXXX */
+ case 'u':
+ parser->pos++;
+ for(i = 0; i < 4 && parser->pos < len && js[parser->pos] != '\0'; i++) {
+ /* If it isn't a hex character we have an error */
+ if(!((js[parser->pos] >= 48 && js[parser->pos] <= 57) || /* 0-9 */
+ (js[parser->pos] >= 65 && js[parser->pos] <= 70) || /* A-F */
+ (js[parser->pos] >= 97 && js[parser->pos] <= 102))) { /* a-f */
+ parser->pos = start;
+ return JSMN_ERROR_INVAL;
+ }
+ parser->pos++;
+ }
+ parser->pos--;
+ break;
+ /* Unexpected symbol */
+ default:
+ parser->pos = start;
+ return JSMN_ERROR_INVAL;
+ }
+ }
+ }
+ parser->pos = start;
+ return JSMN_ERROR_PART;
}
/**
* Parse JSON string and fill tokens.
*/
-jsmnerr_t jsmn_parse(jsmn_parser *parser, const char *js, size_t len,
- jsmntok_t *tokens, unsigned int num_tokens) {
- jsmnerr_t r;
- int i;
- jsmntok_t *token;
- int count = 0;
+int jsmn_parse(jsmn_parser *parser, const char *js, size_t len,
+ jsmntok_t *tokens, unsigned int num_tokens) {
+ int r;
+ int i;
+ jsmntok_t *token;
+ int count = parser->toknext;
- for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
- char c;
- jsmntype_t type;
+ for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
+ char c;
+ jsmntype_t type;
- c = js[parser->pos];
- switch (c) {
- case '{': case '[':
- count++;
- if (tokens == NULL) {
- break;
- }
- token = jsmn_alloc_token(parser, tokens, num_tokens);
- if (token == NULL)
- return JSMN_ERROR_NOMEM;
- if (parser->toksuper != -1) {
- tokens[parser->toksuper].size++;
+ c = js[parser->pos];
+ switch (c) {
+ case '{': case '[':
+ count++;
+ if (tokens == NULL) {
+ break;
+ }
+ token = jsmn_alloc_token(parser, tokens, num_tokens);
+ if (token == NULL)
+ return JSMN_ERROR_NOMEM;
+ if (parser->toksuper != -1) {
+ tokens[parser->toksuper].size++;
#ifdef JSMN_PARENT_LINKS
- token->parent = parser->toksuper;
+ token->parent = parser->toksuper;
#endif
- }
- token->type = (c == '{' ? JSMN_OBJECT : JSMN_ARRAY);
- token->start = parser->pos;
- parser->toksuper = parser->toknext - 1;
- break;
- case '}': case ']':
- if (tokens == NULL)
- break;
- type = (c == '}' ? JSMN_OBJECT : JSMN_ARRAY);
+ }
+ token->type = (c == '{' ? JSMN_OBJECT : JSMN_ARRAY);
+ token->start = parser->pos;
+ parser->toksuper = parser->toknext - 1;
+ break;
+ case '}': case ']':
+ if (tokens == NULL)
+ break;
+ type = (c == '}' ? JSMN_OBJECT : JSMN_ARRAY);
#ifdef JSMN_PARENT_LINKS
- if (parser->toknext < 1) {
- return JSMN_ERROR_INVAL;
- }
- token = &tokens[parser->toknext - 1];
- for (;;) {
- if (token->start != -1 && token->end == -1) {
- if (token->type != type) {
- return JSMN_ERROR_INVAL;
- }
- token->end = parser->pos + 1;
- parser->toksuper = token->parent;
- break;
- }
- if (token->parent == -1) {
- break;
- }
- token = &tokens[token->parent];
- }
+ if (parser->toknext < 1) {
+ return JSMN_ERROR_INVAL;
+ }
+ token = &tokens[parser->toknext - 1];
+ for (;;) {
+ if (token->start != -1 && token->end == -1) {
+ if (token->type != type) {
+ return JSMN_ERROR_INVAL;
+ }
+ token->end = parser->pos + 1;
+ parser->toksuper = token->parent;
+ break;
+ }
+ if (token->parent == -1) {
+ if(token->type != type || parser->toksuper == -1) {
+ return JSMN_ERROR_INVAL;
+ }
+ break;
+ }
+ token = &tokens[token->parent];
+ }
#else
- for (i = parser->toknext - 1; i >= 0; i--) {
- token = &tokens[i];
- if (token->start != -1 && token->end == -1) {
- if (token->type != type) {
- return JSMN_ERROR_INVAL;
- }
- parser->toksuper = -1;
- token->end = parser->pos + 1;
- break;
- }
- }
- /* Error if unmatched closing bracket */
- if (i == -1) return JSMN_ERROR_INVAL;
- for (; i >= 0; i--) {
- token = &tokens[i];
- if (token->start != -1 && token->end == -1) {
- parser->toksuper = i;
- break;
- }
- }
+ for (i = parser->toknext - 1; i >= 0; i--) {
+ token = &tokens[i];
+ if (token->start != -1 && token->end == -1) {
+ if (token->type != type) {
+ return JSMN_ERROR_INVAL;
+ }
+ parser->toksuper = -1;
+ token->end = parser->pos + 1;
+ break;
+ }
+ }
+ /* Error if unmatched closing bracket */
+ if (i == -1) return JSMN_ERROR_INVAL;
+ for (; i >= 0; i--) {
+ token = &tokens[i];
+ if (token->start != -1 && token->end == -1) {
+ parser->toksuper = i;
+ break;
+ }
+ }
#endif
- break;
- case '\"':
- r = jsmn_parse_string(parser, js, len, tokens, num_tokens);
- if (r < 0) return r;
- count++;
- if (parser->toksuper != -1 && tokens != NULL)
- tokens[parser->toksuper].size++;
- break;
- case '\t' : case '\r' : case '\n' : case ':' : case ',': case ' ':
- break;
+ break;
+ case '\"':
+ r = jsmn_parse_string(parser, js, len, tokens, num_tokens);
+ if (r < 0) return r;
+ count++;
+ if (parser->toksuper != -1 && tokens != NULL)
+ tokens[parser->toksuper].size++;
+ break;
+ case '\t' : case '\r' : case '\n' : case ' ':
+ break;
+ case ':':
+ parser->toksuper = parser->toknext - 1;
+ break;
+ case ',':
+ if (tokens != NULL && parser->toksuper != -1 &&
+ tokens[parser->toksuper].type != JSMN_ARRAY &&
+ tokens[parser->toksuper].type != JSMN_OBJECT) {
+#ifdef JSMN_PARENT_LINKS
+ parser->toksuper = tokens[parser->toksuper].parent;
+#else
+ for (i = parser->toknext - 1; i >= 0; i--) {
+ if (tokens[i].type == JSMN_ARRAY || tokens[i].type == JSMN_OBJECT) {
+ if (tokens[i].start != -1 && tokens[i].end == -1) {
+ parser->toksuper = i;
+ break;
+ }
+ }
+ }
+#endif
+ }
+ break;
#ifdef JSMN_STRICT
- /* In strict mode primitives are: numbers and booleans */
- case '-': case '0': case '1' : case '2': case '3' : case '4':
- case '5': case '6': case '7' : case '8': case '9':
- case 't': case 'f': case 'n' :
+ /* In strict mode primitives are: numbers and booleans */
+ case '-': case '0': case '1' : case '2': case '3' : case '4':
+ case '5': case '6': case '7' : case '8': case '9':
+ case 't': case 'f': case 'n' :
+ /* And they must not be keys of the object */
+ if (tokens != NULL && parser->toksuper != -1) {
+ jsmntok_t *t = &tokens[parser->toksuper];
+ if (t->type == JSMN_OBJECT ||
+ (t->type == JSMN_STRING && t->size != 0)) {
+ return JSMN_ERROR_INVAL;
+ }
+ }
#else
- /* In non-strict mode every unquoted value is a primitive */
- default:
+ /* In non-strict mode every unquoted value is a primitive */
+ default:
#endif
- r = jsmn_parse_primitive(parser, js, len, tokens, num_tokens);
- if (r < 0) return r;
- count++;
- if (parser->toksuper != -1 && tokens != NULL)
- tokens[parser->toksuper].size++;
- break;
+ r = jsmn_parse_primitive(parser, js, len, tokens, num_tokens);
+ if (r < 0) return r;
+ count++;
+ if (parser->toksuper != -1 && tokens != NULL)
+ tokens[parser->toksuper].size++;
+ break;
#ifdef JSMN_STRICT
- /* Unexpected char in strict mode */
- default:
- return JSMN_ERROR_INVAL;
+ /* Unexpected char in strict mode */
+ default:
+ return JSMN_ERROR_INVAL;
#endif
- }
- }
+ }
+ }
- for (i = parser->toknext - 1; i >= 0; i--) {
- /* Unmatched opened object or array */
- if (tokens[i].start != -1 && tokens[i].end == -1) {
- return JSMN_ERROR_PART;
- }
- }
+ if (tokens != NULL) {
+ for (i = parser->toknext - 1; i >= 0; i--) {
+ /* Unmatched opened object or array */
+ if (tokens[i].start != -1 && tokens[i].end == -1) {
+ return JSMN_ERROR_PART;
+ }
+ }
+ }
- return count;
+ return count;
}
/**
@@ -275,7 +307,8 @@ jsmnerr_t jsmn_parse(jsmn_parser *parser, const char *js, size_t len,
* available.
*/
void jsmn_init(jsmn_parser *parser) {
- parser->pos = 0;
- parser->toknext = 0;
- parser->toksuper = -1;
+ parser->pos = 0;
+ parser->toknext = 0;
+ parser->toksuper = -1;
}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-04 10:52:09 +0000