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authorThomas Groman <tgroman@nuegia.net>2019-09-19 00:41:48 -0700
committerThomas Groman <tgroman@nuegia.net>2019-09-19 00:41:48 -0700
commit32b3ed0a1362a4b0798ad71fac3450fb77cb7e41 (patch)
tree7be7a2f602e6a5af7bc2db86bef9cf2a659c3d3d /libraries/hoedown/src/autolink.c
parent5fb2c6334e7d5237db11695b4c0ec0f2d1e47c88 (diff)
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merged from 0.6.7 codebase
Diffstat (limited to 'libraries/hoedown/src/autolink.c')
-rw-r--r--libraries/hoedown/src/autolink.c414
1 files changed, 207 insertions, 207 deletions
diff --git a/libraries/hoedown/src/autolink.c b/libraries/hoedown/src/autolink.c
index 9bc7fad5..3063b1a0 100644
--- a/libraries/hoedown/src/autolink.c
+++ b/libraries/hoedown/src/autolink.c
@@ -8,274 +8,274 @@
#ifndef _MSC_VER
#include <strings.h>
#else
-#define strncasecmp _strnicmp
+#define strncasecmp _strnicmp
#endif
int
hoedown_autolink_is_safe(const uint8_t *data, size_t size)
{
- static const size_t valid_uris_count = 6;
- static const char *valid_uris[] = {
- "http://", "https://", "/", "#", "ftp://", "mailto:"
- };
- static const size_t valid_uris_size[] = { 7, 8, 1, 1, 6, 7 };
- size_t i;
-
- for (i = 0; i < valid_uris_count; ++i) {
- size_t len = valid_uris_size[i];
-
- if (size > len &&
- strncasecmp((char *)data, valid_uris[i], len) == 0 &&
- isalnum(data[len]))
- return 1;
- }
-
- return 0;
+ static const size_t valid_uris_count = 6;
+ static const char *valid_uris[] = {
+ "http://", "https://", "/", "#", "ftp://", "mailto:"
+ };
+ static const size_t valid_uris_size[] = { 7, 8, 1, 1, 6, 7 };
+ size_t i;
+
+ for (i = 0; i < valid_uris_count; ++i) {
+ size_t len = valid_uris_size[i];
+
+ if (size > len &&
+ strncasecmp((char *)data, valid_uris[i], len) == 0 &&
+ isalnum(data[len]))
+ return 1;
+ }
+
+ return 0;
}
static size_t
autolink_delim(uint8_t *data, size_t link_end, size_t max_rewind, size_t size)
{
- uint8_t cclose, copen = 0;
- size_t i;
-
- for (i = 0; i < link_end; ++i)
- if (data[i] == '<') {
- link_end = i;
- break;
- }
-
- while (link_end > 0) {
- if (strchr("?!.,:", data[link_end - 1]) != NULL)
- link_end--;
-
- else if (data[link_end - 1] == ';') {
- size_t new_end = link_end - 2;
-
- while (new_end > 0 && isalpha(data[new_end]))
- new_end--;
-
- if (new_end < link_end - 2 && data[new_end] == '&')
- link_end = new_end;
- else
- link_end--;
- }
- else break;
- }
-
- if (link_end == 0)
- return 0;
-
- cclose = data[link_end - 1];
-
- switch (cclose) {
- case '"': copen = '"'; break;
- case '\'': copen = '\''; break;
- case ')': copen = '('; break;
- case ']': copen = '['; break;
- case '}': copen = '{'; break;
- }
-
- if (copen != 0) {
- size_t closing = 0;
- size_t opening = 0;
- size_t i = 0;
-
- /* Try to close the final punctuation sign in this same line;
- * if we managed to close it outside of the URL, that means that it's
- * not part of the URL. If it closes inside the URL, that means it
- * is part of the URL.
- *
- * Examples:
- *
- * foo http://www.pokemon.com/Pikachu_(Electric) bar
- * => http://www.pokemon.com/Pikachu_(Electric)
- *
- * foo (http://www.pokemon.com/Pikachu_(Electric)) bar
- * => http://www.pokemon.com/Pikachu_(Electric)
- *
- * foo http://www.pokemon.com/Pikachu_(Electric)) bar
- * => http://www.pokemon.com/Pikachu_(Electric))
- *
- * (foo http://www.pokemon.com/Pikachu_(Electric)) bar
- * => foo http://www.pokemon.com/Pikachu_(Electric)
- */
-
- while (i < link_end) {
- if (data[i] == copen)
- opening++;
- else if (data[i] == cclose)
- closing++;
-
- i++;
- }
-
- if (closing != opening)
- link_end--;
- }
-
- return link_end;
+ uint8_t cclose, copen = 0;
+ size_t i;
+
+ for (i = 0; i < link_end; ++i)
+ if (data[i] == '<') {
+ link_end = i;
+ break;
+ }
+
+ while (link_end > 0) {
+ if (strchr("?!.,:", data[link_end - 1]) != NULL)
+ link_end--;
+
+ else if (data[link_end - 1] == ';') {
+ size_t new_end = link_end - 2;
+
+ while (new_end > 0 && isalpha(data[new_end]))
+ new_end--;
+
+ if (new_end < link_end - 2 && data[new_end] == '&')
+ link_end = new_end;
+ else
+ link_end--;
+ }
+ else break;
+ }
+
+ if (link_end == 0)
+ return 0;
+
+ cclose = data[link_end - 1];
+
+ switch (cclose) {
+ case '"': copen = '"'; break;
+ case '\'': copen = '\''; break;
+ case ')': copen = '('; break;
+ case ']': copen = '['; break;
+ case '}': copen = '{'; break;
+ }
+
+ if (copen != 0) {
+ size_t closing = 0;
+ size_t opening = 0;
+ size_t i = 0;
+
+ /* Try to close the final punctuation sign in this same line;
+ * if we managed to close it outside of the URL, that means that it's
+ * not part of the URL. If it closes inside the URL, that means it
+ * is part of the URL.
+ *
+ * Examples:
+ *
+ * foo http://www.pokemon.com/Pikachu_(Electric) bar
+ * => http://www.pokemon.com/Pikachu_(Electric)
+ *
+ * foo (http://www.pokemon.com/Pikachu_(Electric)) bar
+ * => http://www.pokemon.com/Pikachu_(Electric)
+ *
+ * foo http://www.pokemon.com/Pikachu_(Electric)) bar
+ * => http://www.pokemon.com/Pikachu_(Electric))
+ *
+ * (foo http://www.pokemon.com/Pikachu_(Electric)) bar
+ * => foo http://www.pokemon.com/Pikachu_(Electric)
+ */
+
+ while (i < link_end) {
+ if (data[i] == copen)
+ opening++;
+ else if (data[i] == cclose)
+ closing++;
+
+ i++;
+ }
+
+ if (closing != opening)
+ link_end--;
+ }
+
+ return link_end;
}
static size_t
check_domain(uint8_t *data, size_t size, int allow_short)
{
- size_t i, np = 0;
-
- if (!isalnum(data[0]))
- return 0;
-
- for (i = 1; i < size - 1; ++i) {
- if (strchr(".:", data[i]) != NULL) np++;
- else if (!isalnum(data[i]) && data[i] != '-') break;
- }
-
- if (allow_short) {
- /* We don't need a valid domain in the strict sense (with
- * least one dot; so just make sure it's composed of valid
- * domain characters and return the length of the the valid
- * sequence. */
- return i;
- } else {
- /* a valid domain needs to have at least a dot.
- * that's as far as we get */
- return np ? i : 0;
- }
+ size_t i, np = 0;
+
+ if (!isalnum(data[0]))
+ return 0;
+
+ for (i = 1; i < size - 1; ++i) {
+ if (strchr(".:", data[i]) != NULL) np++;
+ else if (!isalnum(data[i]) && data[i] != '-') break;
+ }
+
+ if (allow_short) {
+ /* We don't need a valid domain in the strict sense (with
+ * least one dot; so just make sure it's composed of valid
+ * domain characters and return the length of the the valid
+ * sequence. */
+ return i;
+ } else {
+ /* a valid domain needs to have at least a dot.
+ * that's as far as we get */
+ return np ? i : 0;
+ }
}
size_t
hoedown_autolink__www(
- size_t *rewind_p,
- hoedown_buffer *link,
- uint8_t *data,
- size_t max_rewind,
- size_t size,
- unsigned int flags)
+ size_t *rewind_p,
+ hoedown_buffer *link,
+ uint8_t *data,
+ size_t max_rewind,
+ size_t size,
+ unsigned int flags)
{
- size_t link_end;
+ size_t link_end;
- if (max_rewind > 0 && !ispunct(data[-1]) && !isspace(data[-1]))
- return 0;
+ if (max_rewind > 0 && !ispunct(data[-1]) && !isspace(data[-1]))
+ return 0;
- if (size < 4 || memcmp(data, "www.", strlen("www.")) != 0)
- return 0;
+ if (size < 4 || memcmp(data, "www.", strlen("www.")) != 0)
+ return 0;
- link_end = check_domain(data, size, 0);
+ link_end = check_domain(data, size, 0);
- if (link_end == 0)
- return 0;
+ if (link_end == 0)
+ return 0;
- while (link_end < size && !isspace(data[link_end]))
- link_end++;
+ while (link_end < size && !isspace(data[link_end]))
+ link_end++;
- link_end = autolink_delim(data, link_end, max_rewind, size);
+ link_end = autolink_delim(data, link_end, max_rewind, size);
- if (link_end == 0)
- return 0;
+ if (link_end == 0)
+ return 0;
- hoedown_buffer_put(link, data, link_end);
- *rewind_p = 0;
+ hoedown_buffer_put(link, data, link_end);
+ *rewind_p = 0;
- return (int)link_end;
+ return (int)link_end;
}
size_t
hoedown_autolink__email(
- size_t *rewind_p,
- hoedown_buffer *link,
- uint8_t *data,
- size_t max_rewind,
- size_t size,
- unsigned int flags)
+ size_t *rewind_p,
+ hoedown_buffer *link,
+ uint8_t *data,
+ size_t max_rewind,
+ size_t size,
+ unsigned int flags)
{
- size_t link_end, rewind;
- int nb = 0, np = 0;
+ size_t link_end, rewind;
+ int nb = 0, np = 0;
- for (rewind = 0; rewind < max_rewind; ++rewind) {
- uint8_t c = data[-1 - rewind];
+ for (rewind = 0; rewind < max_rewind; ++rewind) {
+ uint8_t c = data[-1 - rewind];
- if (isalnum(c))
- continue;
+ if (isalnum(c))
+ continue;
- if (strchr(".+-_", c) != NULL)
- continue;
+ if (strchr(".+-_", c) != NULL)
+ continue;
- break;
- }
+ break;
+ }
- if (rewind == 0)
- return 0;
+ if (rewind == 0)
+ return 0;
- for (link_end = 0; link_end < size; ++link_end) {
- uint8_t c = data[link_end];
+ for (link_end = 0; link_end < size; ++link_end) {
+ uint8_t c = data[link_end];
- if (isalnum(c))
- continue;
+ if (isalnum(c))
+ continue;
- if (c == '@')
- nb++;
- else if (c == '.' && link_end < size - 1)
- np++;
- else if (c != '-' && c != '_')
- break;
- }
+ if (c == '@')
+ nb++;
+ else if (c == '.' && link_end < size - 1)
+ np++;
+ else if (c != '-' && c != '_')
+ break;
+ }
- if (link_end < 2 || nb != 1 || np == 0 ||
- !isalpha(data[link_end - 1]))
- return 0;
+ if (link_end < 2 || nb != 1 || np == 0 ||
+ !isalpha(data[link_end - 1]))
+ return 0;
- link_end = autolink_delim(data, link_end, max_rewind, size);
+ link_end = autolink_delim(data, link_end, max_rewind, size);
- if (link_end == 0)
- return 0;
+ if (link_end == 0)
+ return 0;
- hoedown_buffer_put(link, data - rewind, link_end + rewind);
- *rewind_p = rewind;
+ hoedown_buffer_put(link, data - rewind, link_end + rewind);
+ *rewind_p = rewind;
- return link_end;
+ return link_end;
}
size_t
hoedown_autolink__url(
- size_t *rewind_p,
- hoedown_buffer *link,
- uint8_t *data,
- size_t max_rewind,
- size_t size,
- unsigned int flags)
+ size_t *rewind_p,
+ hoedown_buffer *link,
+ uint8_t *data,
+ size_t max_rewind,
+ size_t size,
+ unsigned int flags)
{
- size_t link_end, rewind = 0, domain_len;
+ size_t link_end, rewind = 0, domain_len;
- if (size < 4 || data[1] != '/' || data[2] != '/')
- return 0;
+ if (size < 4 || data[1] != '/' || data[2] != '/')
+ return 0;
- while (rewind < max_rewind && isalpha(data[-1 - rewind]))
- rewind++;
+ while (rewind < max_rewind && isalpha(data[-1 - rewind]))
+ rewind++;
- if (!hoedown_autolink_is_safe(data - rewind, size + rewind))
- return 0;
+ if (!hoedown_autolink_is_safe(data - rewind, size + rewind))
+ return 0;
- link_end = strlen("://");
+ link_end = strlen("://");
- domain_len = check_domain(
- data + link_end,
- size - link_end,
- flags & HOEDOWN_AUTOLINK_SHORT_DOMAINS);
+ domain_len = check_domain(
+ data + link_end,
+ size - link_end,
+ flags & HOEDOWN_AUTOLINK_SHORT_DOMAINS);
- if (domain_len == 0)
- return 0;
+ if (domain_len == 0)
+ return 0;
- link_end += domain_len;
- while (link_end < size && !isspace(data[link_end]))
- link_end++;
+ link_end += domain_len;
+ while (link_end < size && !isspace(data[link_end]))
+ link_end++;
- link_end = autolink_delim(data, link_end, max_rewind, size);
+ link_end = autolink_delim(data, link_end, max_rewind, size);
- if (link_end == 0)
- return 0;
+ if (link_end == 0)
+ return 0;
- hoedown_buffer_put(link, data - rewind, link_end + rewind);
- *rewind_p = rewind;
+ hoedown_buffer_put(link, data - rewind, link_end + rewind);
+ *rewind_p = rewind;
- return link_end;
+ return link_end;
}