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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "config.h"
#include "cmark.h"
#include "node.h"
#include "utf8.h"
#include "buffer.h"
#include "chunk.h"
void escape_with_smart(cmark_strbuf *buf,
cmark_node *node,
void (*escape)(cmark_strbuf *, const unsigned char *, int),
const char *left_double_quote,
const char *right_double_quote,
const char *left_single_quote,
const char *right_single_quote,
const char *em_dash,
const char *en_dash,
const char *ellipses)
{
int32_t c = 0;
int32_t after_char = 0;
int32_t before_char = 0;
int len;
bool left_flanking, right_flanking;
int lastout = 0;
int i = 0;
cmark_chunk lit = node->as.literal;
// set before_char based on previous text node if there is one:
if (node->prev) {
if (node->prev->type == CMARK_NODE_TEXT) {
// walk back to the beginning of the UTF_8 sequence:
i = node->prev->as.literal.len - 1;
while (i > 0 && node->prev->as.literal.data[i] >> 6 == 2) {
i -= 1;
}
len = utf8proc_iterate(node->prev->as.literal.data + i,
node->prev->as.literal.len - i,
&before_char);
if (len == -1) {
before_char = 10;
}
} else if (node->prev->type == CMARK_NODE_SOFTBREAK ||
node->prev->type == CMARK_NODE_LINEBREAK) {
before_char = 10;
} else {
before_char = 65;
}
} else {
before_char = 10;
}
while (i < lit.len) {
len = utf8proc_iterate(lit.data + i, lit.len - i, &c);
i += len;
// replace with efficient lookup table:
if (!(c == 34 || c == 39 || c == 45 || c == 46)) {
before_char = c;
continue;
}
(*escape)(buf, lit.data + lastout, i - len - lastout);
if (c == 34 || c == 39) {
if (i >= lit.len) {
if (node->next) {
if (node->next->type == CMARK_NODE_TEXT) {
utf8proc_iterate(node->next->as.literal.data,
node->next->as.literal.len,
&after_char);
} else if (node->next->type == CMARK_NODE_SOFTBREAK ||
node->next->type == CMARK_NODE_LINEBREAK) {
after_char = 10;
} else {
after_char = 65;
}
} else {
after_char = 10;
}
} else {
utf8proc_iterate(lit.data + i, lit.len - i, &after_char);
}
left_flanking = !utf8proc_is_space(after_char) &&
!(utf8proc_is_punctuation(after_char) &&
!utf8proc_is_space(before_char) &&
!utf8proc_is_punctuation(before_char));
right_flanking = !utf8proc_is_space(before_char) &&
!(utf8proc_is_punctuation(before_char) &&
!utf8proc_is_space(after_char) &&
!utf8proc_is_punctuation(after_char));
}
switch (c) {
case 34: // "
if (right_flanking) {
cmark_strbuf_puts(buf, right_double_quote);
} else {
cmark_strbuf_puts(buf, left_double_quote);
}
break;
case 39: // '
if (left_flanking && !right_flanking) {
cmark_strbuf_puts(buf, left_single_quote);
} else {
cmark_strbuf_puts(buf, right_single_quote);
}
break;
case 45: // -
if (i < lit.len && lit.data[i] == '-') {
if (lit.data[i + 1] == '-') {
cmark_strbuf_puts(buf, em_dash);
i += 2;
} else {
cmark_strbuf_puts(buf, en_dash);
i += 1;
}
} else {
cmark_strbuf_putc(buf, c);
}
break;
case 46: // .
if (i < lit.len - 1 && lit.data[i] == '.' &&
lit.data[i + 1] == '.') {
cmark_strbuf_puts(buf, ellipses);
i += 2;
} else {
cmark_strbuf_putc(buf, c);
}
break;
default:
cmark_strbuf_putc(buf, c);
}
lastout = i;
}
(*escape)(buf, node->as.literal.data + lastout, lit.len - lastout);
}
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