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Diffstat (limited to '')
| -rw-r--r-- | src/yajl/yajl.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/src/yajl/yajl.c b/src/yajl/yajl.c new file mode 100644 index 0000000..346ab48 --- /dev/null +++ b/src/yajl/yajl.c @@ -0,0 +1,189 @@ +/* + * Copyright (c) 2007-2014, Lloyd Hilaiel <me@lloyd.io> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "api/yajl_parse.h" +#include "yajl_lex.h" +#include "yajl_parser.h" +#include "yajl_alloc.h" + +#include <stdlib.h> +#include <string.h> +#include <stdarg.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_error: + statStr = "parse error"; + break; + } + return statStr; +} + +yajl_handle +yajl_alloc(const yajl_callbacks * callbacks, + yajl_alloc_funcs * afs, + void * ctx) +{ + 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)); + + hand->callbacks = callbacks; + hand->ctx = ctx; + hand->lexer = NULL; + hand->bytesConsumed = 0; + hand->decodeBuf = yajl_buf_alloc(&(hand->alloc)); + hand->flags = 0; + yajl_bs_init(hand->stateStack, &(hand->alloc)); + yajl_bs_push(hand->stateStack, yajl_state_start); + + return hand; +} + +int +yajl_config(yajl_handle h, yajl_option opt, ...) +{ + int rv = 1; + va_list ap; + va_start(ap, opt); + + switch(opt) { + case yajl_allow_comments: + case yajl_dont_validate_strings: + case yajl_allow_trailing_garbage: + case yajl_allow_multiple_values: + case yajl_allow_partial_values: + if (va_arg(ap, int)) h->flags |= opt; + else h->flags &= ~opt; + break; + default: + rv = 0; + } + va_end(ap); + + return rv; +} + +void +yajl_reset(yajl_handle handle) +{ + handle->bytesConsumed = 0; + if (handle->stateStack.used != 0) { + handle->stateStack.used = 0; + if (handle->lexer != NULL) { + yajl_lex_free(handle->lexer); + handle->lexer = NULL; + } + } + yajl_bs_push(handle->stateStack, yajl_state_start); +} + +void +yajl_free(yajl_handle handle) +{ + yajl_bs_free(handle->stateStack); + yajl_buf_free(handle->decodeBuf); + if (handle->lexer) { + yajl_lex_free(handle->lexer); + handle->lexer = NULL; + } + YA_FREE(&(handle->alloc), handle); +} + +yajl_status +yajl_parse(yajl_handle hand, const unsigned char * jsonText, + size_t jsonTextLen) +{ + yajl_status status; + + /* lazy allocation of the lexer */ + if (hand->lexer == NULL) { + hand->lexer = yajl_lex_alloc(&(hand->alloc), + hand->flags & yajl_allow_comments, + !(hand->flags & yajl_dont_validate_strings)); + } + + status = yajl_do_parse(hand, jsonText, jsonTextLen); + return status; +} + + +yajl_status +yajl_complete_parse(yajl_handle hand) +{ + /* The lexer is lazy allocated in the first call to parse. if parse is + * never called, then no data was provided to parse at all. This is a + * "premature EOF" error unless yajl_allow_partial_values is specified. + * allocating the lexer now is the simplest possible way to handle this + * case while preserving all the other semantics of the parser + * (multiple values, partial values, etc). */ + if (hand->lexer == NULL) { + hand->lexer = yajl_lex_alloc(&(hand->alloc), + hand->flags & yajl_allow_comments, + !(hand->flags & yajl_dont_validate_strings)); + } + + return yajl_do_finish(hand); +} + +unsigned char * +yajl_get_error(yajl_handle hand, int verbose, + const unsigned char * jsonText, size_t jsonTextLen) +{ + return yajl_render_error_string(hand, jsonText, jsonTextLen, verbose); +} + +size_t +yajl_get_bytes_consumed(yajl_handle hand) +{ + if (!hand) return 0; + else return hand->bytesConsumed; +} + + +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 */ |