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Diffstat (limited to 'src/houdini_html_u.c')
-rw-r--r--src/houdini_html_u.c243
1 files changed, 119 insertions, 124 deletions
diff --git a/src/houdini_html_u.c b/src/houdini_html_u.c
index 002357d..7bb1f50 100644
--- a/src/houdini_html_u.c
+++ b/src/houdini_html_u.c
@@ -9,145 +9,140 @@
/* Binary tree lookup code for entities added by JGM */
-static unsigned char *
-S_lookup(int i, int low, int hi, const unsigned char *s, int len)
-{
- int j;
- int cmp = strncmp((char *)s, (char *)cmark_entities[i].entity, len);
- if (cmp == 0 && cmark_entities[i].entity[len] == 0) {
- return (unsigned char *)cmark_entities[i].bytes;
- } else if (cmp < 0 && i > low) {
- j = i - ((i - low) / 2);
- if (j == i) j -= 1;
- return S_lookup(j, low, i - 1, s, len);
- } else if (cmp > 0 && i < hi) {
- j = i + ((hi - i) / 2);
- if (j == i) j += 1;
- return S_lookup(j, i + 1, hi, s, len);
- } else {
- return NULL;
- }
+static unsigned char *S_lookup(int i, int low, int hi, const unsigned char *s,
+ int len) {
+ int j;
+ int cmp = strncmp((char *)s, (char *)cmark_entities[i].entity, len);
+ if (cmp == 0 && cmark_entities[i].entity[len] == 0) {
+ return (unsigned char *)cmark_entities[i].bytes;
+ } else if (cmp < 0 && i > low) {
+ j = i - ((i - low) / 2);
+ if (j == i)
+ j -= 1;
+ return S_lookup(j, low, i - 1, s, len);
+ } else if (cmp > 0 && i < hi) {
+ j = i + ((hi - i) / 2);
+ if (j == i)
+ j += 1;
+ return S_lookup(j, i + 1, hi, s, len);
+ } else {
+ return NULL;
+ }
}
-static unsigned char *
-S_lookup_entity(const unsigned char *s, int len)
-{
- return S_lookup(CMARK_NUM_ENTITIES / 2, 0, CMARK_NUM_ENTITIES - 1, s, len);
+static unsigned char *S_lookup_entity(const unsigned char *s, int len) {
+ return S_lookup(CMARK_NUM_ENTITIES / 2, 0, CMARK_NUM_ENTITIES - 1, s, len);
}
-bufsize_t
-houdini_unescape_ent(cmark_strbuf *ob, const uint8_t *src, bufsize_t size)
-{
- bufsize_t i = 0;
-
- if (size >= 3 && src[0] == '#') {
- int codepoint = 0;
- int num_digits = 0;
-
- if (_isdigit(src[1])) {
- for (i = 1; i < size && _isdigit(src[i]); ++i) {
- codepoint = (codepoint * 10) + (src[i] - '0');
-
- if (codepoint >= 0x110000) {
- // Keep counting digits but
- // avoid integer overflow.
- codepoint = 0x110000;
- }
- }
-
- num_digits = i - 1;
- }
-
- else if (src[1] == 'x' || src[1] == 'X') {
- for (i = 2; i < size && _isxdigit(src[i]); ++i) {
- codepoint = (codepoint * 16) + ((src[i] | 32) % 39 - 9);
-
- if (codepoint >= 0x110000) {
- // Keep counting digits but
- // avoid integer overflow.
- codepoint = 0x110000;
- }
- }
-
- num_digits = i - 2;
- }
-
- if (num_digits >= 1 && num_digits <= 8 &&
- i < size && src[i] == ';') {
- if (codepoint == 0 ||
- (codepoint >= 0xD800 && codepoint < 0xE000) ||
- codepoint >= 0x110000) {
- codepoint = 0xFFFD;
- }
- utf8proc_encode_char(codepoint, ob);
- return i + 1;
- }
- }
-
- else {
- if (size > CMARK_ENTITY_MAX_LENGTH)
- size = CMARK_ENTITY_MAX_LENGTH;
-
- for (i = CMARK_ENTITY_MIN_LENGTH; i < size; ++i) {
- if (src[i] == ' ')
- break;
-
- if (src[i] == ';') {
- const unsigned char *entity = S_lookup_entity(src, i);
-
- if (entity != NULL) {
- cmark_strbuf_puts(ob, (const char *)entity);
- return i + 1;
- }
-
- break;
- }
- }
- }
-
- return 0;
+bufsize_t houdini_unescape_ent(cmark_strbuf *ob, const uint8_t *src,
+ bufsize_t size) {
+ bufsize_t i = 0;
+
+ if (size >= 3 && src[0] == '#') {
+ int codepoint = 0;
+ int num_digits = 0;
+
+ if (_isdigit(src[1])) {
+ for (i = 1; i < size && _isdigit(src[i]); ++i) {
+ codepoint = (codepoint * 10) + (src[i] - '0');
+
+ if (codepoint >= 0x110000) {
+ // Keep counting digits but
+ // avoid integer overflow.
+ codepoint = 0x110000;
+ }
+ }
+
+ num_digits = i - 1;
+ }
+
+ else if (src[1] == 'x' || src[1] == 'X') {
+ for (i = 2; i < size && _isxdigit(src[i]); ++i) {
+ codepoint = (codepoint * 16) + ((src[i] | 32) % 39 - 9);
+
+ if (codepoint >= 0x110000) {
+ // Keep counting digits but
+ // avoid integer overflow.
+ codepoint = 0x110000;
+ }
+ }
+
+ num_digits = i - 2;
+ }
+
+ if (num_digits >= 1 && num_digits <= 8 && i < size && src[i] == ';') {
+ if (codepoint == 0 || (codepoint >= 0xD800 && codepoint < 0xE000) ||
+ codepoint >= 0x110000) {
+ codepoint = 0xFFFD;
+ }
+ utf8proc_encode_char(codepoint, ob);
+ return i + 1;
+ }
+ }
+
+ else {
+ if (size > CMARK_ENTITY_MAX_LENGTH)
+ size = CMARK_ENTITY_MAX_LENGTH;
+
+ for (i = CMARK_ENTITY_MIN_LENGTH; i < size; ++i) {
+ if (src[i] == ' ')
+ break;
+
+ if (src[i] == ';') {
+ const unsigned char *entity = S_lookup_entity(src, i);
+
+ if (entity != NULL) {
+ cmark_strbuf_puts(ob, (const char *)entity);
+ return i + 1;
+ }
+
+ break;
+ }
+ }
+ }
+
+ return 0;
}
-int
-houdini_unescape_html(cmark_strbuf *ob, const uint8_t *src, bufsize_t size)
-{
- bufsize_t i = 0, org, ent;
+int houdini_unescape_html(cmark_strbuf *ob, const uint8_t *src,
+ bufsize_t size) {
+ bufsize_t i = 0, org, ent;
- while (i < size) {
- org = i;
- while (i < size && src[i] != '&')
- i++;
+ while (i < size) {
+ org = i;
+ while (i < size && src[i] != '&')
+ i++;
- if (likely(i > org)) {
- if (unlikely(org == 0)) {
- if (i >= size)
- return 0;
+ if (likely(i > org)) {
+ if (unlikely(org == 0)) {
+ if (i >= size)
+ return 0;
- cmark_strbuf_grow(ob, HOUDINI_UNESCAPED_SIZE(size));
- }
+ cmark_strbuf_grow(ob, HOUDINI_UNESCAPED_SIZE(size));
+ }
- cmark_strbuf_put(ob, src + org, i - org);
- }
+ cmark_strbuf_put(ob, src + org, i - org);
+ }
- /* escaping */
- if (i >= size)
- break;
+ /* escaping */
+ if (i >= size)
+ break;
- i++;
+ i++;
- ent = houdini_unescape_ent(ob, src + i, size - i);
- i += ent;
+ ent = houdini_unescape_ent(ob, src + i, size - i);
+ i += ent;
- /* not really an entity */
- if (ent == 0)
- cmark_strbuf_putc(ob, '&');
- }
+ /* not really an entity */
+ if (ent == 0)
+ cmark_strbuf_putc(ob, '&');
+ }
- return 1;
+ return 1;
}
-void houdini_unescape_html_f(cmark_strbuf *ob, const uint8_t *src, bufsize_t size)
-{
- if (!houdini_unescape_html(ob, src, size))
- cmark_strbuf_put(ob, src, size);
+void houdini_unescape_html_f(cmark_strbuf *ob, const uint8_t *src,
+ bufsize_t size) {
+ if (!houdini_unescape_html(ob, src, size))
+ cmark_strbuf_put(ob, src, size);
}