jsmn

FossilOrigin-Name: ecb1f35226e9937aaa2f255e3d3dcb4662c0902821cfdb87e9645a3277aee6ec

src/contrib/jsmn/.hg/branch

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src/contrib/jsmn/.hg/cache/branchheads-served

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+8d750a9d664e55ea40b400f338e119aac847c771 setekhid/jsmnh2822-warning-commas-at-the-end-of-e-1408807731663

src/contrib/jsmn/.hg/hgrc

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+[paths]
+default = https://bitbucket.org/zserge/jsmn

src/contrib/jsmn/.hg/requires

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+dotencode
+fncache
+revlogv1
+store

src/contrib/jsmn/.hg/store/fncache

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+data/example/jsondump.c.i
+data/jsmn_test.c.i
+data/test.sh.i
+data/jsmn.h.i
+data/README.i
+data/example/simple.c.i
+data/demo.c.i
+data/jsmn.c.i
+data/LICENSE.i
+data/Makefile.i
+data/README.md.i

src/contrib/jsmn/.hg/undo.branch

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+default

src/contrib/jsmn/.hg/undo.desc

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+0
+pull
+https://bitbucket.org/zserge/jsmn

src/contrib/jsmn/LICENSE

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+Copyright (c) 2010 Serge A. Zaitsev
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+

src/contrib/jsmn/Makefile

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+# You can put your build options here
+-include config.mk
+
+all: libjsmn.a 
+
+libjsmn.a: jsmn.o
+	$(AR) rc $@ $^
+
+%.o: %.c jsmn.h
+	$(CC) -c $(CFLAGS) $< -o $@
+
+test: jsmn_test
+	./jsmn_test
+
+jsmn_test: jsmn_test.o
+	$(CC) $(LDFLAGS) -L. -ljsmn $< -o $@
+
+jsmn_test.o: jsmn_test.c libjsmn.a
+
+simple_example: example/simple.o libjsmn.a
+	$(CC) $(LDFLAGS) $^ -o $@
+
+jsondump: example/jsondump.o libjsmn.a
+	$(CC) $(LDFLAGS) $^ -o $@
+
+clean:
+	rm -f jsmn.o jsmn_test.o example/simple.o
+	rm -f jsmn_test
+	rm -f jsmn_test.exe
+	rm -f libjsmn.a
+	rm -f simple_example
+	rm -f jsondump
+
+.PHONY: all clean test
+

src/contrib/jsmn/README.md

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+
+JSMN
+====
+
+jsmn (pronounced like 'jasmine') is a minimalistic JSON parser in C.  It can be
+easily integrated into resource-limited or embedded projects.
+
+You can find more information about JSON format at [json.org][1]
+
+Library sources are available at [bitbucket.org/zserge/jsmn][2]
+
+The web page with some information about jsmn can be found at
+[http://zserge.com/jsmn.html][3]
+
+Philosophy
+----------
+
+Most JSON parsers offer you a bunch of functions to load JSON data, parse it
+and extract any value by its name. jsmn proves that checking the correctness of
+every JSON packet or allocating temporary objects to store parsed JSON fields
+often is an overkill. 
+
+JSON format itself is extremely simple, so why should we complicate it?
+
+jsmn is designed to be	**robust** (it should work fine even with erroneous
+data), **fast** (it should parse data on the fly), **portable** (no superfluous
+dependencies or non-standard C extensions). An of course, **simplicity** is a
+key feature - simple code style, simple algorithm, simple integration into
+other projects.
+
+Features
+--------
+
+* compatible with C89
+* no dependencies (even libc!)
+* highly portable (tested on x86/amd64, ARM, AVR)
+* about 200 lines of code
+* extremely small code footprint
+* API contains only 2 functions
+* no dynamic memory allocation
+* incremental single-pass parsing
+* library code is covered with unit-tests
+
+Design
+------
+
+The rudimentary jsmn object is a **token**. Let's consider a JSON string:
+
+	'{ "name" : "Jack", "age" : 27 }'
+
+It holds the following tokens:
+
+* Object: `{ "name" : "Jack", "age" : 27}` (the whole object)
+* Strings: `"name"`, `"Jack"`, `"age"` (keys and some values)
+* Number: `27`
+
+In jsmn, tokens do not hold any data, but point to token boundaries in JSON
+string instead. In the example above jsmn will create tokens like: Object
+[0..31], String [3..7], String [12..16], String [20..23], Number [27..29].
+
+Every jsmn token has a type, which indicates the type of corresponding JSON
+token. jsmn supports the following token types:
+
+* Object - a container of key-value pairs, e.g.:
+	`{ "foo":"bar", "x":0.3 }`
+* Array - a sequence of values, e.g.:
+	`[ 1, 2, 3 ]`
+* String - a quoted sequence of chars, e.g.: `"foo"`
+* Primitive - a number, a boolean (`true`, `false`) or `null`
+
+Besides start/end positions, jsmn tokens for complex types (like arrays
+or objects) also contain a number of child items, so you can easily follow
+object hierarchy.
+
+This approach provides enough information for parsing any JSON data and makes
+it possible to use zero-copy techniques.
+
+Install
+-------
+
+To clone the repository you should have mercurial installed. Just run:
+
+	$ hg clone http://bitbucket.org/zserge/jsmn jsmn
+
+Repository layout is simple: jsmn.c and jsmn.h are library files, tests are in
+the jsmn\_test.c, you will also find README, LICENSE and Makefile files inside.
+
+To build the library, run `make`. It is also recommended to run `make test`.
+Let me know, if some tests fail.
+
+If build was successful, you should get a `libjsmn.a` library.
+The header file you should include is called `"jsmn.h"`.
+
+API
+---
+
+Token types are described by `jsmntype_t`:
+
+	typedef enum {
+		JSMN_PRIMITIVE = 0,
+		JSMN_OBJECT = 1,
+		JSMN_ARRAY = 2,
+		JSMN_STRING = 3
+	} jsmntype_t;
+
+**Note:** Unlike JSON data types, primitive tokens are not divided into
+numbers, booleans and null, because one can easily tell the type using the
+first character:
+
+* <code>'t', 'f'</code> - boolean 
+* <code>'n'</code> - null
+* <code>'-', '0'..'9'</code> - number
+
+Token is an object of `jsmntok_t` type:
+
+	typedef struct {
+		jsmntype_t type; // Token type
+		int start;       // Token start position
+		int end;         // Token end position
+		int size;        // Number of child (nested) tokens
+	} jsmntok_t;
+
+**Note:** string tokens point to the first character after
+the opening quote and the previous symbol before final quote. This was made 
+to simplify string extraction from JSON data.
+
+All job is done by `jsmn_parser` object. You can initialize a new parser using:
+
+	jsmn_parser parser;
+	jsmntok_t tokens[10];
+
+	jsmn_init(&parser);
+
+	// js - pointer to JSON string
+	// tokens - an array of tokens available
+	// 10 - number of tokens available
+	jsmn_parse(&parser, js, tokens, 10);
+
+This will create a parser, and then it tries to parse up to 10 JSON tokens from
+the `js` string.
+
+A non-negative reutrn value of `jsmn_parse` is the number of tokens actually
+used by the parser.
+Passing NULL instead of the tokens array would not store parsing results, but
+instead the function will return the value of tokens needed to parse the given
+string. This can be useful if you don't know yet how many tokens to allocate.
+
+If something goes wrong, you will get an error. Error will be one of these:
+
+* `JSMN_ERROR_INVAL` - bad token, JSON string is corrupted
+* `JSMN_ERROR_NOMEM` - not enough tokens, JSON string is too large
+* `JSMN_ERROR_PART` - JSON string is too short, expecting more JSON data
+
+If you get `JSON_ERROR_NOMEM`, you can re-allocate more tokens and call
+`jsmn_parse` once more.  If you read json data from the stream, you can
+periodically call `jsmn_parse` and check if return value is `JSON_ERROR_PART`.
+You will get this error until you reach the end of JSON data.
+
+Other info
+----------
+
+This software is distributed under [MIT license](http://www.opensource.org/licenses/mit-license.php),
+ so feel free to integrate it in your commercial products.
+
+[1]: http://www.json.org/
+[2]: https://bitbucket.org/zserge/jsmn/wiki/Home
+[3]: http://zserge.com/jsmn.html

src/contrib/jsmn/example/jsondump.c

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+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include "../jsmn.h"
+
+/*
+ * An example of reading JSON from stdin and printing its content to stdout.
+ * The output looks like YAML, but I'm not sure if it's really compatible.
+ */
+
+static int dump(const char *js, jsmntok_t *t, size_t count, int indent) {
+	int i, j, k;
+	if (count == 0) {
+		return 0;
+	}
+	if (t->type == JSMN_PRIMITIVE) {
+		printf("%.*s", t->end - t->start, js+t->start);
+		return 1;
+	} else if (t->type == JSMN_STRING) {
+		printf("'%.*s'", t->end - t->start, js+t->start);
+		return 1;
+	} else if (t->type == JSMN_OBJECT) {
+		printf("\n");
+		j = 0;
+		for (i = 0; i < t->size; i++) {
+			for (k = 0; k < indent; k++) printf("  ");
+			j += dump(js, t+1+j, count-j, indent+1);
+			printf(": ");
+			j += dump(js, t+1+j, count-j, indent+1);
+			printf("\n");
+		}
+		return j+1;
+	} else if (t->type == JSMN_ARRAY) {
+		j = 0;
+		printf("\n");
+		for (i = 0; i < t->size; i++) {
+			for (k = 0; k < indent-1; k++) printf("  ");
+			printf("   - ");
+			j += dump(js, t+1+j, count-j, indent+1);
+			printf("\n");
+		}
+		return j+1;
+	}
+	return 0;
+}
+
+int main() {
+	int r;
+	int eof_expected = 0;
+	char *js = NULL;
+	size_t jslen = 0;
+	char buf[BUFSIZ];
+
+	jsmn_parser p;
+	jsmntok_t *tok;
+	size_t tokcount = 2;
+
+	/* Prepare parser */
+	jsmn_init(&p);
+
+	/* Allocate some tokens as a start */
+	tok = malloc(sizeof(*tok) * tokcount);
+	if (tok == NULL) {
+		fprintf(stderr, "malloc(): errno=%d\n", errno);
+		return 3;
+	}
+
+	for (;;) {
+		/* Read another chunk */
+		r = fread(buf, 1, sizeof(buf), stdin);
+		if (r < 0) {
+			fprintf(stderr, "fread(): %d, errno=%d\n", r, errno);
+			return 1;
+		}
+		if (r == 0) {
+			if (eof_expected != 0) {
+				return 0;
+			} else {
+				fprintf(stderr, "fread(): unexpected EOF\n");
+				return 2;
+			}
+		}
+
+		js = realloc(js, jslen + r + 1);
+		if (js == NULL) {
+			fprintf(stderr, "realloc(): errno=%d\n", errno);
+			return 3;
+		}
+		strncpy(js + jslen, buf, r);
+		jslen = jslen + r;
+
+again:
+		r = jsmn_parse(&p, js, jslen, tok, tokcount);
+		if (r < 0) {
+			if (r == JSMN_ERROR_NOMEM) {
+				tokcount = tokcount * 2;
+				tok = realloc(tok, sizeof(*tok) * tokcount);
+				if (tok == NULL) {
+					fprintf(stderr, "realloc(): errno=%d\n", errno);
+					return 3;
+				}
+				goto again;
+			}
+		} else {
+			dump(js, tok, p.toknext, 0);
+			eof_expected = 1;
+		}
+	}
+
+	return 0;
+}

src/contrib/jsmn/example/simple.c

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+#include <stdio.h>
+#include <string.h>
+#include "../jsmn.h"
+
+/*
+ * A small example of jsmn parsing when JSON structure is known and number of
+ * tokens is predictable.
+ */
+
+const char *JSON_STRING =
+	"{\"user\": \"johndoe\", \"admin\": false, \"uid\": 1000,\n  "
+	"\"groups\": [\"users\", \"wheel\", \"audio\", \"video\"]}";
+
+static int jsoneq(const char *json, jsmntok_t *tok, const char *s) {
+	if (tok->type == JSMN_STRING && (int) strlen(s) == tok->end - tok->start &&
+			strncmp(json + tok->start, s, tok->end - tok->start) == 0) {
+		return 0;
+	}
+	return -1;
+}
+
+int main() {
+	int i;
+	int r;
+	jsmn_parser p;
+	jsmntok_t t[128]; /* We expect no more than 128 tokens */
+
+	jsmn_init(&p);
+	r = jsmn_parse(&p, JSON_STRING, strlen(JSON_STRING), t, sizeof(t)/sizeof(t[0]));
+	if (r < 0) {
+		printf("Failed to parse JSON: %d\n", r);
+		return 1;
+	}
+
+	/* Assume the top-level element is an object */
+	if (r < 1 || t[0].type != JSMN_OBJECT) {
+		printf("Object expected\n");
+		return 1;
+	}
+
+	/* Loop over all keys of the root object */
+	for (i = 1; i < r; i++) {
+		if (jsoneq(JSON_STRING, &t[i], "user") == 0) {
+			/* We may use strndup() to fetch string value */
+			printf("- User: %.*s\n", t[i+1].end-t[i+1].start,
+					JSON_STRING + t[i+1].start);
+			i++;
+		} else if (jsoneq(JSON_STRING, &t[i], "admin") == 0) {
+			/* We may additionally check if the value is either "true" or "false" */
+			printf("- Admin: %.*s\n", t[i+1].end-t[i+1].start,
+					JSON_STRING + t[i+1].start);
+			i++;
+		} else if (jsoneq(JSON_STRING, &t[i], "uid") == 0) {
+			/* We may want to do strtol() here to get numeric value */
+			printf("- UID: %.*s\n", t[i+1].end-t[i+1].start,
+					JSON_STRING + t[i+1].start);
+			i++;
+		} else if (jsoneq(JSON_STRING, &t[i], "groups") == 0) {
+			int j;
+			printf("- Groups:\n");
+			if (t[i+1].type != JSMN_ARRAY) {
+				continue; /* We expect groups to be an array of strings */
+			}
+			for (j = 0; j < t[i+1].size; j++) {
+				jsmntok_t *g = &t[i+j+2];
+				printf("  * %.*s\n", g->end - g->start, JSON_STRING + g->start);
+			}
+			i += t[i+1].size + 1;
+		} else {
+			printf("Unexpected key: %.*s\n", t[i].end-t[i].start,
+					JSON_STRING + t[i].start);
+		}
+	}
+	return 0;
+}

src/contrib/jsmn/jsmn.c

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+#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;
+#ifdef JSMN_PARENT_LINKS
+	tok->parent = -1;
+#endif
+	return tok;
+}
+
+/**
+ * Fills token type and boundaries.
+ */
+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;
+}
+
+/**
+ * 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;
+
+	start = 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 ':':
+#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;
+		}
+	}
+#ifdef JSMN_STRICT
+	/* 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);
+#ifdef JSMN_PARENT_LINKS
+	token->parent = parser->toksuper;
+#endif
+	parser->pos--;
+	return 0;
+}
+
+/**
+ * Filsl 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;
+
+	int start = parser->pos;
+
+	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);
+#ifdef JSMN_PARENT_LINKS
+			token->parent = parser->toksuper;
+#endif
+			return 0;
+		}
+
+		/* 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;
+
+	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++;
+#ifdef JSMN_PARENT_LINKS
+					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);
+#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];
+				}
+#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;
+					}
+				}
+#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 ' ':
+				break;
+			case ':':
+				parser->toksuper = parser->toknext - 1;
+				break;
+			case ',':
+				if (tokens != NULL &&
+						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' :
+				/* And they must not be keys of the object */
+				if (tokens != NULL) {
+					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:
+#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;
+
+#ifdef JSMN_STRICT
+			/* 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;
+		}
+	}
+
+	return count;
+}
+
+/**
+ * Creates a new parser based over a given  buffer with an array of tokens
+ * available.
+ */
+void jsmn_init(jsmn_parser *parser) {
+	parser->pos = 0;
+	parser->toknext = 0;
+	parser->toksuper = -1;
+}
+

src/contrib/jsmn/jsmn.h

@@ -0,0 +1,75 @@
+#ifndef __JSMN_H_
+#define __JSMN_H_
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * JSON type identifier. Basic types are:
+ * 	o Object
+ * 	o Array
+ * 	o String
+ * 	o Other primitive: number, boolean (true/false) or null
+ */
+typedef enum {
+	JSMN_PRIMITIVE = 0,
+	JSMN_OBJECT = 1,
+	JSMN_ARRAY = 2,
+	JSMN_STRING = 3
+} jsmntype_t;
+
+typedef enum {
+	/* Not enough tokens were provided */
+	JSMN_ERROR_NOMEM = -1,
+	/* Invalid character inside JSON string */
+	JSMN_ERROR_INVAL = -2,
+	/* The string is not a full JSON packet, more bytes expected */
+	JSMN_ERROR_PART = -3
+} jsmnerr_t;
+
+/**
+ * JSON token description.
+ * @param		type	type (object, array, string etc.)
+ * @param		start	start position in JSON data string
+ * @param		end		end position in JSON data string
+ */
+typedef struct {
+	jsmntype_t type;
+	int start;
+	int end;
+	int size;
+#ifdef JSMN_PARENT_LINKS
+	int parent;
+#endif
+} jsmntok_t;
+
+/**
+ * JSON parser. Contains an array of token blocks available. Also stores
+ * the string being parsed now and current position in that string
+ */
+typedef struct {
+	unsigned int pos; /* offset in the JSON string */
+	unsigned int toknext; /* next token to allocate */
+	int toksuper; /* superior token node, e.g parent object or array */
+} jsmn_parser;
+
+/**
+ * Create JSON parser over an array of tokens
+ */
+void jsmn_init(jsmn_parser *parser);
+
+/**
+ * Run JSON parser. It parses a JSON data string into and array of tokens, each describing
+ * a single JSON object.
+ */
+jsmnerr_t jsmn_parse(jsmn_parser *parser, const char *js, size_t len,
+		jsmntok_t *tokens, unsigned int num_tokens);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __JSMN_H_ */

src/contrib/jsmn/jsmn_test.c

@@ -0,0 +1,608 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static int test_passed = 0;
+static int test_failed = 0;
+
+/* Terminate current test with error */
+#define fail()	return __LINE__
+
+/* Successfull end of the test case */
+#define done() return 0
+
+/* Check single condition */
+#define check(cond) do { if (!(cond)) fail(); } while (0)
+
+/* Test runner */
+static void test(int (*func)(void), const char *name) {
+	int r = func();
+	if (r == 0) {
+		test_passed++;
+	} else {
+		test_failed++;
+		printf("FAILED: %s (at line %d)\n", name, r);
+	}
+}
+
+#define TOKEN_EQ(t, tok_start, tok_end, tok_type) \
+	((t).start == tok_start \
+	 && (t).end == tok_end  \
+	 && (t).type == (tok_type))
+
+#define TOKEN_STRING(js, t, s) \
+	(strncmp(js+(t).start, s, (t).end - (t).start) == 0 \
+	 && strlen(s) == (t).end - (t).start)
+
+#define TOKEN_PRINT(t) \
+	printf("start: %d, end: %d, type: %d, size: %d\n", \
+			(t).start, (t).end, (t).type, (t).size)
+
+#define JSMN_STRICT
+#include "jsmn.c"
+
+int test_empty() {
+	const char *js;
+	int r;
+	jsmn_parser p;
+	jsmntok_t t[10];
+
+	js = "{}";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), t, 10);
+	check(r >= 0);
+	check(t[0].type == JSMN_OBJECT);
+	check(t[0].start == 0 && t[0].end == 2);
+
+	js = "[]";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), t, 10);
+	check(r >= 0);
+	check(t[0].type == JSMN_ARRAY);
+	check(t[0].start == 0 && t[0].end == 2);
+
+	js = "{\"a\":[]}";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), t, 10);
+	check(r >= 0);
+	check(t[0].type == JSMN_OBJECT && t[0].start == 0 && t[0].end == 8);
+	check(t[1].type == JSMN_STRING && t[1].start == 2 && t[1].end == 3);
+	check(t[2].type == JSMN_ARRAY && t[2].start == 5 && t[2].end == 7);
+
+	js = "[{},{}]";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), t, 10);
+	check(r >= 0);
+	check(t[0].type == JSMN_ARRAY && t[0].start == 0 && t[0].end == 7);
+	check(t[1].type == JSMN_OBJECT && t[1].start == 1 && t[1].end == 3);
+	check(t[2].type == JSMN_OBJECT && t[2].start == 4 && t[2].end == 6);
+	return 0;
+}
+
+int test_simple() {
+	const char *js;
+	int r;
+	jsmn_parser p;
+	jsmntok_t tokens[10];
+
+	js = "{\"a\": 0}";
+
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), tokens, 10);
+	check(r >= 0);
+	check(TOKEN_EQ(tokens[0], 0, 8, JSMN_OBJECT));
+	check(TOKEN_EQ(tokens[1], 2, 3, JSMN_STRING));
+	check(TOKEN_EQ(tokens[2], 6, 7, JSMN_PRIMITIVE));
+
+	check(TOKEN_STRING(js, tokens[0], js));
+	check(TOKEN_STRING(js, tokens[1], "a"));
+	check(TOKEN_STRING(js, tokens[2], "0"));
+
+	jsmn_init(&p);
+	js = "[\"a\":{},\"b\":{}]";
+	r = jsmn_parse(&p, js, strlen(js), tokens, 10);
+	check(r >= 0);
+
+	jsmn_init(&p);
+	js = "{\n \"Day\": 26,\n \"Month\": 9,\n \"Year\": 12\n }";
+	r = jsmn_parse(&p, js, strlen(js), tokens, 10);
+	check(r >= 0);
+
+	return 0;
+}
+
+int test_primitive() {
+#ifndef JSMN_STRICT
+	int r;
+	jsmn_parser p;
+	jsmntok_t tok[10];
+	const char *js;
+	js = "\"boolVar\" : true";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), tok, 10);
+	check(r >= 0 && tok[0].type == JSMN_STRING
+			&& tok[1].type == JSMN_PRIMITIVE);
+	check(TOKEN_STRING(js, tok[0], "boolVar"));
+	check(TOKEN_STRING(js, tok[1], "true"));
+
+	js = "\"boolVar\" : false";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), tok, 10);
+	check(r >= 0 && tok[0].type == JSMN_STRING
+			&& tok[1].type == JSMN_PRIMITIVE);
+	check(TOKEN_STRING(js, tok[0], "boolVar"));
+	check(TOKEN_STRING(js, tok[1], "false"));
+
+	js = "\"intVar\" : 12345";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), tok, 10);
+	check(r >= 0 && tok[0].type == JSMN_STRING
+			&& tok[1].type == JSMN_PRIMITIVE);
+	check(TOKEN_STRING(js, tok[0], "intVar"));
+	check(TOKEN_STRING(js, tok[1], "12345"));
+
+	js = "\"floatVar\" : 12.345";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), tok, 10);
+	check(r >= 0 && tok[0].type == JSMN_STRING
+			&& tok[1].type == JSMN_PRIMITIVE);
+	check(TOKEN_STRING(js, tok[0], "floatVar"));
+	check(TOKEN_STRING(js, tok[1], "12.345"));
+
+	js = "\"nullVar\" : null";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), tok, 10);
+	check(r >= 0 && tok[0].type == JSMN_STRING
+			&& tok[1].type == JSMN_PRIMITIVE);
+	check(TOKEN_STRING(js, tok[0], "nullVar"));
+	check(TOKEN_STRING(js, tok[1], "null"));
+#endif
+	return 0;
+}
+
+int test_string() {
+	int r;
+	jsmn_parser p;
+	jsmntok_t tok[10];
+	const char *js;
+
+	js = "\"strVar\" : \"hello world\"";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), tok, 10);
+	check(r >= 0 && tok[0].type == JSMN_STRING
+			&& tok[1].type == JSMN_STRING);
+	check(TOKEN_STRING(js, tok[0], "strVar"));
+	check(TOKEN_STRING(js, tok[1], "hello world"));
+
+	js = "\"strVar\" : \"escapes: \\/\\r\\n\\t\\b\\f\\\"\\\\\"";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), tok, 10);
+	check(r >= 0 && tok[0].type == JSMN_STRING
+			&& tok[1].type == JSMN_STRING);
+	check(TOKEN_STRING(js, tok[0], "strVar"));
+	check(TOKEN_STRING(js, tok[1], "escapes: \\/\\r\\n\\t\\b\\f\\\"\\\\"));
+
+	js = "\"strVar\" : \"\"";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), tok, 10);
+	check(r >= 0 && tok[0].type == JSMN_STRING
+			&& tok[1].type == JSMN_STRING);
+	check(TOKEN_STRING(js, tok[0], "strVar"));
+	check(TOKEN_STRING(js, tok[1], ""));
+
+	return 0;
+}
+
+int test_partial_string() {
+	int r;
+	jsmn_parser p;
+	jsmntok_t tok[10];
+	const char *js;
+
+	jsmn_init(&p);
+	js = "\"x\": \"va";
+	r = jsmn_parse(&p, js, strlen(js), tok, 10);
+	check(r == JSMN_ERROR_PART && tok[0].type == JSMN_STRING);
+	check(TOKEN_STRING(js, tok[0], "x"));
+	check(p.toknext == 1);
+
+	jsmn_init(&p);
+	char js_slash[9] = "\"x\": \"va\\";
+	r = jsmn_parse(&p, js_slash, sizeof(js_slash), tok, 10);
+	check(r == JSMN_ERROR_PART);
+
+	jsmn_init(&p);
+	char js_unicode[10] = "\"x\": \"va\\u";
+	r = jsmn_parse(&p, js_unicode, sizeof(js_unicode), tok, 10);
+	check(r == JSMN_ERROR_PART);
+
+	js = "\"x\": \"valu";
+	r = jsmn_parse(&p, js, strlen(js), tok, 10);
+	check(r == JSMN_ERROR_PART && tok[0].type == JSMN_STRING);
+	check(TOKEN_STRING(js, tok[0], "x"));
+	check(p.toknext == 1);
+
+	js = "\"x\": \"value\"";
+	r = jsmn_parse(&p, js, strlen(js), tok, 10);
+	check(r >= 0 && tok[0].type == JSMN_STRING
+			&& tok[1].type == JSMN_STRING);
+	check(TOKEN_STRING(js, tok[0], "x"));
+	check(TOKEN_STRING(js, tok[1], "value"));
+
+	js = "\"x\": \"value\", \"y\": \"value y\"";
+	r = jsmn_parse(&p, js, strlen(js), tok, 10);
+	check(r >= 0 && tok[0].type == JSMN_STRING
+			&& tok[1].type == JSMN_STRING && tok[2].type == JSMN_STRING
+			&& tok[3].type == JSMN_STRING);
+	check(TOKEN_STRING(js, tok[0], "x"));
+	check(TOKEN_STRING(js, tok[1], "value"));
+	check(TOKEN_STRING(js, tok[2], "y"));
+	check(TOKEN_STRING(js, tok[3], "value y"));
+
+	return 0;
+}
+
+int test_unquoted_keys() {
+#ifndef JSMN_STRICT
+	int r;
+	jsmn_parser p;
+	jsmntok_t tok[10];
+	const char *js;
+
+	jsmn_init(&p);
+	js = "key1: \"value\"\nkey2 : 123";
+
+	r = jsmn_parse(&p, js, strlen(js), tok, 10);
+	check(r >= 0 && tok[0].type == JSMN_PRIMITIVE
+			&& tok[1].type == JSMN_STRING && tok[2].type == JSMN_PRIMITIVE
+			&& tok[3].type == JSMN_PRIMITIVE);
+	check(TOKEN_STRING(js, tok[0], "key1"));
+	check(TOKEN_STRING(js, tok[1], "value"));
+	check(TOKEN_STRING(js, tok[2], "key2"));
+	check(TOKEN_STRING(js, tok[3], "123"));
+#endif
+	return 0;
+}
+
+int test_partial_array() {
+	int r;
+	jsmn_parser p;
+	jsmntok_t tok[10];
+	const char *js;
+
+	jsmn_init(&p);
+	js = "  [ 1, true, ";
+	r = jsmn_parse(&p, js, strlen(js), tok, 10);
+	check(r == JSMN_ERROR_PART && tok[0].type == JSMN_ARRAY
+			&& tok[1].type == JSMN_PRIMITIVE && tok[2].type == JSMN_PRIMITIVE);
+
+	js = "  [ 1, true, [123, \"hello";
+	r = jsmn_parse(&p, js, strlen(js), tok, 10);
+	check(r == JSMN_ERROR_PART && tok[0].type == JSMN_ARRAY
+			&& tok[1].type == JSMN_PRIMITIVE && tok[2].type == JSMN_PRIMITIVE
+			&& tok[3].type == JSMN_ARRAY && tok[4].type == JSMN_PRIMITIVE);
+
+	js = "  [ 1, true, [123, \"hello\"]";
+	r = jsmn_parse(&p, js, strlen(js), tok, 10);
+	check(r == JSMN_ERROR_PART && tok[0].type == JSMN_ARRAY
+			&& tok[1].type == JSMN_PRIMITIVE && tok[2].type == JSMN_PRIMITIVE
+			&& tok[3].type == JSMN_ARRAY && tok[4].type == JSMN_PRIMITIVE
+			&& tok[5].type == JSMN_STRING);
+	/* check child nodes of the 2nd array */
+	check(tok[3].size == 2);
+
+	js = "  [ 1, true, [123, \"hello\"]]";
+	r = jsmn_parse(&p, js, strlen(js), tok, 10);
+	check(r >= 0 && tok[0].type == JSMN_ARRAY
+			&& tok[1].type == JSMN_PRIMITIVE && tok[2].type == JSMN_PRIMITIVE
+			&& tok[3].type == JSMN_ARRAY && tok[4].type == JSMN_PRIMITIVE
+			&& tok[5].type == JSMN_STRING);
+	check(tok[3].size == 2);
+	check(tok[0].size == 3);
+	return 0;
+}
+
+int test_array_nomem() {
+	int i;
+	int r;
+	jsmn_parser p;
+	jsmntok_t toksmall[10], toklarge[10];
+	const char *js;
+
+	js = "  [ 1, true, [123, \"hello\"]]";
+
+	for (i = 0; i < 6; i++) {
+		jsmn_init(&p);
+		memset(toksmall, 0, sizeof(toksmall));
+		memset(toklarge, 0, sizeof(toklarge));
+		r = jsmn_parse(&p, js, strlen(js), toksmall, i);
+		check(r == JSMN_ERROR_NOMEM);
+
+		memcpy(toklarge, toksmall, sizeof(toksmall));
+
+		r = jsmn_parse(&p, js, strlen(js), toklarge, 10);
+		check(r >= 0);
+
+		check(toklarge[0].type == JSMN_ARRAY && toklarge[0].size == 3);
+		check(toklarge[3].type == JSMN_ARRAY && toklarge[3].size == 2);
+	}
+	return 0;
+}
+
+int test_objects_arrays() {
+	int r;
+	jsmn_parser p;
+	jsmntok_t tokens[10];
+	const char *js;
+
+	js = "[10}";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), tokens, 10);
+	check(r == JSMN_ERROR_INVAL);
+
+	js = "[10]";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), tokens, 10);
+	check(r >= 0);
+
+	js = "{\"a\": 1]";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), tokens, 10);
+	check(r == JSMN_ERROR_INVAL);
+
+	js = "{\"a\": 1}";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), tokens, 10);
+	check(r >= 0);
+
+	return 0;
+}
+
+int test_issue_22() {
+	int r;
+	jsmn_parser p;
+	jsmntok_t tokens[128];
+	const char *js;
+
+	js = "{ \"height\":10, \"layers\":[ { \"data\":[6,6], \"height\":10, "
+		"\"name\":\"Calque de Tile 1\", \"opacity\":1, \"type\":\"tilelayer\", "
+		"\"visible\":true, \"width\":10, \"x\":0, \"y\":0 }], "
+		"\"orientation\":\"orthogonal\", \"properties\": { }, \"tileheight\":32, "
+		"\"tilesets\":[ { \"firstgid\":1, \"image\":\"..\\/images\\/tiles.png\", "
+		"\"imageheight\":64, \"imagewidth\":160, \"margin\":0, \"name\":\"Tiles\", "
+		"\"properties\":{}, \"spacing\":0, \"tileheight\":32, \"tilewidth\":32 }], "
+		"\"tilewidth\":32, \"version\":1, \"width\":10 }";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), tokens, 128);
+	check(r >= 0);
+#if 0
+	for (i = 1; tokens[i].end < tokens[0].end; i++) {
+		if (tokens[i].type == JSMN_STRING || tokens[i].type == JSMN_PRIMITIVE) {
+			printf("%.*s\n", tokens[i].end - tokens[i].start, js + tokens[i].start);
+		} else if (tokens[i].type == JSMN_ARRAY) {
+			printf("[%d elems]\n", tokens[i].size);
+		} else if (tokens[i].type == JSMN_OBJECT) {
+			printf("{%d elems}\n", tokens[i].size);
+		} else {
+			TOKEN_PRINT(tokens[i]);
+		}
+	}
+#endif
+	return 0;
+}
+
+int test_unicode_characters() {
+	jsmn_parser p;
+	jsmntok_t tokens[10];
+	const char *js;
+
+	int r;
+	js = "{\"a\":\"\\uAbcD\"}";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), tokens, 10);
+	check(r >= 0);
+
+	js = "{\"a\":\"str\\u0000\"}";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), tokens, 10);
+	check(r >= 0);
+
+	js = "{\"a\":\"\\uFFFFstr\"}";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), tokens, 10);
+	check(r >= 0);
+
+	js = "{\"a\":\"str\\uFFGFstr\"}";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), tokens, 10);
+	check(r == JSMN_ERROR_INVAL);
+
+	js = "{\"a\":\"str\\u@FfF\"}";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), tokens, 10);
+	check(r == JSMN_ERROR_INVAL);
+
+	js = "{\"a\":[\"\\u028\"]}";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), tokens, 10);
+	check(r == JSMN_ERROR_INVAL);
+
+	js = "{\"a\":[\"\\u0280\"]}";
+	jsmn_init(&p);
+	r = jsmn_parse(&p, js, strlen(js), tokens, 10);
+	check(r >= 0);
+
+	return 0;
+}
+
+int test_input_length() {
+	const char *js;
+	int r;
+	jsmn_parser p;
+	jsmntok_t tokens[10];
+