diff options
author | Jörg Frings-Fürst <debian@jff-webhosting.net> | 2014-09-01 13:56:46 +0200 |
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committer | Jörg Frings-Fürst <debian@jff-webhosting.net> | 2014-09-01 13:56:46 +0200 |
commit | 22f703cab05b7cd368f4de9e03991b7664dc5022 (patch) | |
tree | 6f4d50beaa42328e24b1c6b56b6ec059e4ef21a5 /jcnf/yajl/yajl.c |
Initial import of argyll version 1.5.1-8debian/1.5.1-8
Diffstat (limited to 'jcnf/yajl/yajl.c')
-rw-r--r-- | jcnf/yajl/yajl.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/jcnf/yajl/yajl.c b/jcnf/yajl/yajl.c new file mode 100644 index 0000000..b0dc991 --- /dev/null +++ b/jcnf/yajl/yajl.c @@ -0,0 +1,152 @@ +/* + * Copyright 2007-2009, Lloyd Hilaiel. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. Neither the name of Lloyd Hilaiel nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include "yajl_parse.h" +#include "yajl_lex.h" +#include "yajl_parser.h" +#include "yajl_alloc.h" + +#include <stdlib.h> +#include <string.h> +#include <assert.h> + +const char * +yajl_status_to_string(yajl_status stat) +{ + const char * statStr = "unknown"; + switch (stat) { + case yajl_status_ok: + statStr = "ok, no error"; + break; + case yajl_status_client_canceled: + statStr = "client canceled parse"; + break; + case yajl_status_insufficient_data: + statStr = "eof was met before the parse could complete"; + break; + case yajl_status_error: + statStr = "parse error"; + break; + } + return statStr; +} + +yajl_handle +yajl_alloc(const yajl_callbacks * callbacks, + const yajl_parser_config * config, + const yajl_alloc_funcs * afs, + void * ctx) +{ + unsigned int allowComments = 0; + unsigned int validateUTF8 = 0; + yajl_handle hand = NULL; + yajl_alloc_funcs afsBuffer; + + /* first order of business is to set up memory allocation routines */ + if (afs != NULL) { + if (afs->malloc == NULL || afs->realloc == NULL || afs->free == NULL) + { + return NULL; + } + } else { + yajl_set_default_alloc_funcs(&afsBuffer); + afs = &afsBuffer; + } + + hand = (yajl_handle) YA_MALLOC(afs, sizeof(struct yajl_handle_t)); + + /* copy in pointers to allocation routines */ + memcpy((void *) &(hand->alloc), (void *) afs, sizeof(yajl_alloc_funcs)); + + if (config != NULL) { + allowComments = config->allowComments; + validateUTF8 = config->checkUTF8; + } + + hand->callbacks = callbacks; + hand->ctx = ctx; + hand->lexer = yajl_lex_alloc(&(hand->alloc), allowComments, validateUTF8); + hand->errorOffset = 0; + hand->decodeBuf = yajl_buf_alloc(&(hand->alloc)); + yajl_bs_init(hand->stateStack, &(hand->alloc)); + + yajl_bs_push(hand->stateStack, yajl_state_start); + + return hand; +} + +void +yajl_free(yajl_handle handle) +{ + yajl_bs_free(handle->stateStack); + yajl_buf_free(handle->decodeBuf); + yajl_lex_free(handle->lexer); + YA_FREE(&(handle->alloc), handle); +} + +yajl_status +yajl_parse(yajl_handle hand, const unsigned char * jsonText, + unsigned int jsonTextLen) +{ + unsigned int offset = 0; + yajl_status status; + status = yajl_do_parse(hand, &offset, jsonText, jsonTextLen); + return status; +} + +yajl_status +yajl_parse_complete(yajl_handle hand) +{ + /* The particular case we want to handle is a trailing number. + * Further input consisting of digits could cause our interpretation + * of the number to change (buffered "1" but "2" comes in). + * A very simple approach to this is to inject whitespace to terminate + * any number in the lex buffer. + */ + return yajl_parse(hand, (const unsigned char *)" ", 1); +} + +unsigned char * +yajl_get_error(yajl_handle hand, int verbose, + const unsigned char * jsonText, unsigned int jsonTextLen) +{ + return yajl_render_error_string(hand, jsonText, jsonTextLen, verbose); +} + +void +yajl_free_error(yajl_handle hand, unsigned char * str) +{ + /* use memory allocation functions if set */ + YA_FREE(&(hand->alloc), str); +} + +/* XXX: add utility routines to parse from file */ |