diff options
Diffstat (limited to 'src/references.c')
| -rw-r--r-- | src/references.c | 212 |
1 files changed, 101 insertions, 111 deletions
diff --git a/src/references.c b/src/references.c index 1d3d56d..980a948 100644 --- a/src/references.c +++ b/src/references.c @@ -5,150 +5,140 @@ #include "inlines.h" #include "chunk.h" -static unsigned int -refhash(const unsigned char *link_ref) -{ - unsigned int hash = 0; +static unsigned int refhash(const unsigned char *link_ref) { + unsigned int hash = 0; - while (*link_ref) - hash = (*link_ref++) + (hash << 6) + (hash << 16) - hash; + while (*link_ref) + hash = (*link_ref++) + (hash << 6) + (hash << 16) - hash; - return hash; + return hash; } -static void reference_free(cmark_reference *ref) -{ - if(ref != NULL) { - free(ref->label); - cmark_chunk_free(&ref->url); - cmark_chunk_free(&ref->title); - free(ref); - } +static void reference_free(cmark_reference *ref) { + if (ref != NULL) { + free(ref->label); + cmark_chunk_free(&ref->url); + cmark_chunk_free(&ref->title); + free(ref); + } } // normalize reference: collapse internal whitespace to single space, // remove leading/trailing whitespace, case fold // Return NULL if the reference name is actually empty (i.e. composed // solely from whitespace) -static unsigned char *normalize_reference(cmark_chunk *ref) -{ - cmark_strbuf normalized = GH_BUF_INIT; - unsigned char *result; +static unsigned char *normalize_reference(cmark_chunk *ref) { + cmark_strbuf normalized = GH_BUF_INIT; + unsigned char *result; - if(ref == NULL) - return NULL; + if (ref == NULL) + return NULL; - if (ref->len == 0) - return NULL; + if (ref->len == 0) + return NULL; - utf8proc_case_fold(&normalized, ref->data, ref->len); - cmark_strbuf_trim(&normalized); - cmark_strbuf_normalize_whitespace(&normalized); + utf8proc_case_fold(&normalized, ref->data, ref->len); + cmark_strbuf_trim(&normalized); + cmark_strbuf_normalize_whitespace(&normalized); - result = cmark_strbuf_detach(&normalized); - assert(result); + result = cmark_strbuf_detach(&normalized); + assert(result); - if (result[0] == '\0') { - free(result); - return NULL; - } + if (result[0] == '\0') { + free(result); + return NULL; + } - return result; + return result; } -static void add_reference(cmark_reference_map *map, cmark_reference* ref) -{ - cmark_reference *t = ref->next = map->table[ref->hash % REFMAP_SIZE]; +static void add_reference(cmark_reference_map *map, cmark_reference *ref) { + cmark_reference *t = ref->next = map->table[ref->hash % REFMAP_SIZE]; - while (t) { - if (t->hash == ref->hash && - !strcmp((char *)t->label, (char *)ref->label)) { - reference_free(ref); - return; - } + while (t) { + if (t->hash == ref->hash && !strcmp((char *)t->label, (char *)ref->label)) { + reference_free(ref); + return; + } - t = t->next; - } + t = t->next; + } - map->table[ref->hash % REFMAP_SIZE] = ref; + map->table[ref->hash % REFMAP_SIZE] = ref; } -void cmark_reference_create(cmark_reference_map *map, cmark_chunk *label, cmark_chunk *url, - cmark_chunk *title) -{ - cmark_reference *ref; - unsigned char *reflabel = normalize_reference(label); - - /* empty reference name, or composed from only whitespace */ - if (reflabel == NULL) - return; - - ref = (cmark_reference *)calloc(1, sizeof(*ref)); - if(ref != NULL) { - ref->label = reflabel; - ref->hash = refhash(ref->label); - ref->url = cmark_clean_url(url); - ref->title = cmark_clean_title(title); - ref->next = NULL; - - add_reference(map, ref); - } +void cmark_reference_create(cmark_reference_map *map, cmark_chunk *label, + cmark_chunk *url, cmark_chunk *title) { + cmark_reference *ref; + unsigned char *reflabel = normalize_reference(label); + + /* empty reference name, or composed from only whitespace */ + if (reflabel == NULL) + return; + + ref = (cmark_reference *)calloc(1, sizeof(*ref)); + if (ref != NULL) { + ref->label = reflabel; + ref->hash = refhash(ref->label); + ref->url = cmark_clean_url(url); + ref->title = cmark_clean_title(title); + ref->next = NULL; + + add_reference(map, ref); + } } // Returns reference if refmap contains a reference with matching // label, otherwise NULL. -cmark_reference* cmark_reference_lookup(cmark_reference_map *map, cmark_chunk *label) -{ - cmark_reference *ref = NULL; - unsigned char *norm; - unsigned int hash; - - if (label->len > MAX_LINK_LABEL_LENGTH) - return NULL; - - if (map == NULL) - return NULL; - - norm = normalize_reference(label); - if (norm == NULL) - return NULL; - - hash = refhash(norm); - ref = map->table[hash % REFMAP_SIZE]; - - while (ref) { - if (ref->hash == hash && - !strcmp((char *)ref->label, (char *)norm)) - break; - ref = ref->next; - } - - free(norm); - return ref; +cmark_reference *cmark_reference_lookup(cmark_reference_map *map, + cmark_chunk *label) { + cmark_reference *ref = NULL; + unsigned char *norm; + unsigned int hash; + + if (label->len > MAX_LINK_LABEL_LENGTH) + return NULL; + + if (map == NULL) + return NULL; + + norm = normalize_reference(label); + if (norm == NULL) + return NULL; + + hash = refhash(norm); + ref = map->table[hash % REFMAP_SIZE]; + + while (ref) { + if (ref->hash == hash && !strcmp((char *)ref->label, (char *)norm)) + break; + ref = ref->next; + } + + free(norm); + return ref; } -void cmark_reference_map_free(cmark_reference_map *map) -{ - unsigned int i; +void cmark_reference_map_free(cmark_reference_map *map) { + unsigned int i; - if(map == NULL) - return; + if (map == NULL) + return; - for (i = 0; i < REFMAP_SIZE; ++i) { - cmark_reference *ref = map->table[i]; - cmark_reference *next; + for (i = 0; i < REFMAP_SIZE; ++i) { + cmark_reference *ref = map->table[i]; + cmark_reference *next; - while (ref) { - next = ref->next; - reference_free(ref); - ref = next; - } - } + while (ref) { + next = ref->next; + reference_free(ref); + ref = next; + } + } - free(map); + free(map); } -cmark_reference_map *cmark_reference_map_new(void) -{ - return (cmark_reference_map *)calloc(1, sizeof(cmark_reference_map)); +cmark_reference_map *cmark_reference_map_new(void) { + return (cmark_reference_map *)calloc(1, sizeof(cmark_reference_map)); } |