diff options
Diffstat (limited to 'libraries/hoedown/src/html_smartypants.c')
| -rw-r--r-- | libraries/hoedown/src/html_smartypants.c | 435 |
1 files changed, 0 insertions, 435 deletions
diff --git a/libraries/hoedown/src/html_smartypants.c b/libraries/hoedown/src/html_smartypants.c deleted file mode 100644 index d89624f3..00000000 --- a/libraries/hoedown/src/html_smartypants.c +++ /dev/null @@ -1,435 +0,0 @@ -#include "hoedown/html.h" - -#include <string.h> -#include <stdlib.h> -#include <stdio.h> -#include <ctype.h> - -#ifdef _MSC_VER -#define snprintf _snprintf -#endif - -struct smartypants_data { - int in_squote; - int in_dquote; -}; - -static size_t smartypants_cb__ltag(hoedown_buffer *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size); -static size_t smartypants_cb__dquote(hoedown_buffer *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size); -static size_t smartypants_cb__amp(hoedown_buffer *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size); -static size_t smartypants_cb__period(hoedown_buffer *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size); -static size_t smartypants_cb__number(hoedown_buffer *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size); -static size_t smartypants_cb__dash(hoedown_buffer *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size); -static size_t smartypants_cb__parens(hoedown_buffer *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size); -static size_t smartypants_cb__squote(hoedown_buffer *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size); -static size_t smartypants_cb__backtick(hoedown_buffer *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size); -static size_t smartypants_cb__escape(hoedown_buffer *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size); - -static size_t (*smartypants_cb_ptrs[]) - (hoedown_buffer *, struct smartypants_data *, uint8_t, const uint8_t *, size_t) = -{ - NULL, /* 0 */ - smartypants_cb__dash, /* 1 */ - smartypants_cb__parens, /* 2 */ - smartypants_cb__squote, /* 3 */ - smartypants_cb__dquote, /* 4 */ - smartypants_cb__amp, /* 5 */ - smartypants_cb__period, /* 6 */ - smartypants_cb__number, /* 7 */ - smartypants_cb__ltag, /* 8 */ - smartypants_cb__backtick, /* 9 */ - smartypants_cb__escape, /* 10 */ -}; - -static const uint8_t smartypants_cb_chars[UINT8_MAX+1] = { - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 4, 0, 0, 0, 5, 3, 2, 0, 0, 0, 0, 1, 6, 0, - 0, 7, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 0, 0, 0, - 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -}; - -static int -word_boundary(uint8_t c) -{ - return c == 0 || isspace(c) || ispunct(c); -} - -/* - If 'text' begins with any kind of single quote (e.g. "'" or "'" etc.), - returns the length of the sequence of characters that makes up the single- - quote. Otherwise, returns zero. -*/ -static size_t -squote_len(const uint8_t *text, size_t size) -{ - static char* single_quote_list[] = { "'", "'", "'", "'", NULL }; - char** p; - - for (p = single_quote_list; *p; ++p) { - size_t len = strlen(*p); - if (size >= len && memcmp(text, *p, len) == 0) { - return len; - } - } - - return 0; -} - -/* Converts " or ' at very beginning or end of a word to left or right quote */ -static int -smartypants_quotes(hoedown_buffer *ob, uint8_t previous_char, uint8_t next_char, uint8_t quote, int *is_open) -{ - char ent[8]; - - if (*is_open && !word_boundary(next_char)) - return 0; - - if (!(*is_open) && !word_boundary(previous_char)) - return 0; - - snprintf(ent, sizeof(ent), "&%c%cquo;", (*is_open) ? 'r' : 'l', quote); - *is_open = !(*is_open); - hoedown_buffer_puts(ob, ent); - return 1; -} - -/* - Converts ' to left or right single quote; but the initial ' might be in - different forms, e.g. ' or ' or '. - 'squote_text' points to the original single quote, and 'squote_size' is its length. - 'text' points at the last character of the single-quote, e.g. ' or ; -*/ -static size_t -smartypants_squote(hoedown_buffer *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size, - const uint8_t *squote_text, size_t squote_size) -{ - if (size >= 2) { - uint8_t t1 = tolower(text[1]); - size_t next_squote_len = squote_len(text+1, size-1); - - /* convert '' to “ or ” */ - if (next_squote_len > 0) { - uint8_t next_char = (size > 1+next_squote_len) ? text[1+next_squote_len] : 0; - if (smartypants_quotes(ob, previous_char, next_char, 'd', &smrt->in_dquote)) - return next_squote_len; - } - - /* Tom's, isn't, I'm, I'd */ - if ((t1 == 's' || t1 == 't' || t1 == 'm' || t1 == 'd') && - (size == 3 || word_boundary(text[2]))) { - HOEDOWN_BUFPUTSL(ob, "’"); - return 0; - } - - /* you're, you'll, you've */ - if (size >= 3) { - uint8_t t2 = tolower(text[2]); - - if (((t1 == 'r' && t2 == 'e') || - (t1 == 'l' && t2 == 'l') || - (t1 == 'v' && t2 == 'e')) && - (size == 4 || word_boundary(text[3]))) { - HOEDOWN_BUFPUTSL(ob, "’"); - return 0; - } - } - } - - if (smartypants_quotes(ob, previous_char, size > 0 ? text[1] : 0, 's', &smrt->in_squote)) - return 0; - - hoedown_buffer_put(ob, squote_text, squote_size); - return 0; -} - -/* Converts ' to left or right single quote. */ -static size_t -smartypants_cb__squote(hoedown_buffer *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size) -{ - return smartypants_squote(ob, smrt, previous_char, text, size, text, 1); -} - -/* Converts (c), (r), (tm) */ -static size_t -smartypants_cb__parens(hoedown_buffer *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size) -{ - if (size >= 3) { - uint8_t t1 = tolower(text[1]); - uint8_t t2 = tolower(text[2]); - - if (t1 == 'c' && t2 == ')') { - HOEDOWN_BUFPUTSL(ob, "©"); - return 2; - } - - if (t1 == 'r' && t2 == ')') { - HOEDOWN_BUFPUTSL(ob, "®"); - return 2; - } - - if (size >= 4 && t1 == 't' && t2 == 'm' && text[3] == ')') { - HOEDOWN_BUFPUTSL(ob, "™"); - return 3; - } - } - - hoedown_buffer_putc(ob, text[0]); - return 0; -} - -/* Converts "--" to em-dash, etc. */ -static size_t -smartypants_cb__dash(hoedown_buffer *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size) -{ - if (size >= 3 && text[1] == '-' && text[2] == '-') { - HOEDOWN_BUFPUTSL(ob, "—"); - return 2; - } - - if (size >= 2 && text[1] == '-') { - HOEDOWN_BUFPUTSL(ob, "–"); - return 1; - } - - hoedown_buffer_putc(ob, text[0]); - return 0; -} - -/* Converts " etc. */ -static size_t -smartypants_cb__amp(hoedown_buffer *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size) -{ - size_t len; - if (size >= 6 && memcmp(text, """, 6) == 0) { - if (smartypants_quotes(ob, previous_char, size >= 7 ? text[6] : 0, 'd', &smrt->in_dquote)) - return 5; - } - - len = squote_len(text, size); - if (len > 0) { - return (len-1) + smartypants_squote(ob, smrt, previous_char, text+(len-1), size-(len-1), text, len); - } - - if (size >= 4 && memcmp(text, "�", 4) == 0) - return 3; - - hoedown_buffer_putc(ob, '&'); - return 0; -} - -/* Converts "..." to ellipsis */ -static size_t -smartypants_cb__period(hoedown_buffer *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size) -{ - if (size >= 3 && text[1] == '.' && text[2] == '.') { - HOEDOWN_BUFPUTSL(ob, "…"); - return 2; - } - - if (size >= 5 && text[1] == ' ' && text[2] == '.' && text[3] == ' ' && text[4] == '.') { - HOEDOWN_BUFPUTSL(ob, "…"); - return 4; - } - - hoedown_buffer_putc(ob, text[0]); - return 0; -} - -/* Converts `` to opening double quote */ -static size_t -smartypants_cb__backtick(hoedown_buffer *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size) -{ - if (size >= 2 && text[1] == '`') { - if (smartypants_quotes(ob, previous_char, size >= 3 ? text[2] : 0, 'd', &smrt->in_dquote)) - return 1; - } - - hoedown_buffer_putc(ob, text[0]); - return 0; -} - -/* Converts 1/2, 1/4, 3/4 */ -static size_t -smartypants_cb__number(hoedown_buffer *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size) -{ - if (word_boundary(previous_char) && size >= 3) { - if (text[0] == '1' && text[1] == '/' && text[2] == '2') { - if (size == 3 || word_boundary(text[3])) { - HOEDOWN_BUFPUTSL(ob, "½"); - return 2; - } - } - - if (text[0] == '1' && text[1] == '/' && text[2] == '4') { - if (size == 3 || word_boundary(text[3]) || - (size >= 5 && tolower(text[3]) == 't' && tolower(text[4]) == 'h')) { - HOEDOWN_BUFPUTSL(ob, "¼"); - return 2; - } - } - - if (text[0] == '3' && text[1] == '/' && text[2] == '4') { - if (size == 3 || word_boundary(text[3]) || - (size >= 6 && tolower(text[3]) == 't' && tolower(text[4]) == 'h' && tolower(text[5]) == 's')) { - HOEDOWN_BUFPUTSL(ob, "¾"); - return 2; - } - } - } - - hoedown_buffer_putc(ob, text[0]); - return 0; -} - -/* Converts " to left or right double quote */ -static size_t -smartypants_cb__dquote(hoedown_buffer *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size) -{ - if (!smartypants_quotes(ob, previous_char, size > 0 ? text[1] : 0, 'd', &smrt->in_dquote)) - HOEDOWN_BUFPUTSL(ob, """); - - return 0; -} - -static size_t -smartypants_cb__ltag(hoedown_buffer *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size) -{ - static const char *skip_tags[] = { - "pre", "code", "var", "samp", "kbd", "math", "script", "style" - }; - static const size_t skip_tags_count = 8; - - size_t tag, i = 0; - - /* This is a comment. Copy everything verbatim until --> or EOF is seen. */ - if (i + 4 < size && memcmp(text, "<!--", 4) == 0) { - i += 4; - while (i + 3 < size && memcmp(text + i, "-->", 3) != 0) - i++; - i += 3; - hoedown_buffer_put(ob, text, i + 1); - return i; - } - - while (i < size && text[i] != '>') - i++; - - for (tag = 0; tag < skip_tags_count; ++tag) { - if (hoedown_html_is_tag(text, size, skip_tags[tag]) == HOEDOWN_HTML_TAG_OPEN) - break; - } - - if (tag < skip_tags_count) { - for (;;) { - while (i < size && text[i] != '<') - i++; - - if (i == size) - break; - - if (hoedown_html_is_tag(text + i, size - i, skip_tags[tag]) == HOEDOWN_HTML_TAG_CLOSE) - break; - - i++; - } - - while (i < size && text[i] != '>') - i++; - } - - hoedown_buffer_put(ob, text, i + 1); - return i; -} - -static size_t -smartypants_cb__escape(hoedown_buffer *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size) -{ - if (size < 2) - return 0; - - switch (text[1]) { - case '\\': - case '"': - case '\'': - case '.': - case '-': - case '`': - hoedown_buffer_putc(ob, text[1]); - return 1; - - default: - hoedown_buffer_putc(ob, '\\'); - return 0; - } -} - -#if 0 -static struct { - uint8_t c0; - const uint8_t *pattern; - const uint8_t *entity; - int skip; -} smartypants_subs[] = { - { '\'', "'s>", "’", 0 }, - { '\'', "'t>", "’", 0 }, - { '\'', "'re>", "’", 0 }, - { '\'', "'ll>", "’", 0 }, - { '\'', "'ve>", "’", 0 }, - { '\'', "'m>", "’", 0 }, - { '\'', "'d>", "’", 0 }, - { '-', "--", "—", 1 }, - { '-', "<->", "–", 0 }, - { '.', "...", "…", 2 }, - { '.', ". . .", "…", 4 }, - { '(', "(c)", "©", 2 }, - { '(', "(r)", "®", 2 }, - { '(', "(tm)", "™", 3 }, - { '3', "<3/4>", "¾", 2 }, - { '3', "<3/4ths>", "¾", 2 }, - { '1', "<1/2>", "½", 2 }, - { '1', "<1/4>", "¼", 2 }, - { '1', "<1/4th>", "¼", 2 }, - { '&', "�", 0, 3 }, -}; -#endif - -void -hoedown_html_smartypants(hoedown_buffer *ob, const uint8_t *text, size_t size) -{ - size_t i; - struct smartypants_data smrt = {0, 0}; - - if (!text) - return; - - hoedown_buffer_grow(ob, size); - - for (i = 0; i < size; ++i) { - size_t org; - uint8_t action = 0; - - org = i; - while (i < size && (action = smartypants_cb_chars[text[i]]) == 0) - i++; - - if (i > org) - hoedown_buffer_put(ob, text + org, i - org); - - if (i < size) { - i += smartypants_cb_ptrs[(int)action] - (ob, &smrt, i ? text[i - 1] : 0, text + i, size - i); - } - } -} |