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#include "../include/extract_alloc.h"
#include "astring.h"
#include "mem.h"
#include "memento.h"
#include <assert.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
void extract_astring_init(extract_astring_t* string)
{
string->chars = NULL;
string->chars_num = 0;
}
void extract_astring_free(extract_alloc_t* alloc, extract_astring_t* string)
{
extract_free(alloc, &string->chars);
extract_astring_init(string);
}
int extract_astring_catl(extract_alloc_t* alloc, extract_astring_t* string, const char* s, size_t s_len)
{
if (extract_realloc2(alloc, &string->chars, string->chars_num+1, string->chars_num + s_len + 1)) return -1;
/* Coverity doesn't seem to realise that extract_realloc2() modifies
string->chars. */
/* coverity[deref_parm_field_in_call] */
memcpy(string->chars + string->chars_num, s, s_len);
string->chars[string->chars_num + s_len] = 0;
string->chars_num += s_len;
return 0;
}
int extract_astring_catc(extract_alloc_t* alloc, extract_astring_t* string, char c)
{
return extract_astring_catl(alloc, string, &c, 1);
}
int extract_astring_cat(extract_alloc_t* alloc, extract_astring_t* string, const char* s)
{
return extract_astring_catl(alloc, string, s, strlen(s));
}
int extract_astring_catf(extract_alloc_t* alloc, extract_astring_t* string, const char* format, ...)
{
char* buffer = NULL;
int e;
va_list va;
va_start(va, format);
e = extract_vasprintf(alloc, &buffer, format, va);
va_end(va);
if (e < 0) return e;
e = extract_astring_cat(alloc, string, buffer);
extract_free(alloc, &buffer);
return e;
}
int extract_astring_truncate(extract_astring_t* content, int len)
{
assert((size_t) len <= content->chars_num);
content->chars_num -= len;
content->chars[content->chars_num] = 0;
return 0;
}
int extract_astring_char_truncate_if(extract_astring_t* content, char c)
{
if (content->chars_num && content->chars[content->chars_num-1] == c) {
extract_astring_truncate(content, 1);
}
return 0;
}
int extract_astring_catc_unicode(
extract_alloc_t* alloc,
extract_astring_t* string,
int c,
int xml,
int ascii_ligatures,
int ascii_dash,
int ascii_apostrophe
)
{
int ret = -1;
if (0) {}
/* Escape XML special characters. */
else if (xml && c == '<') extract_astring_cat(alloc, string, "<");
else if (xml && c == '>') extract_astring_cat(alloc, string, ">");
else if (xml && c == '&') extract_astring_cat(alloc, string, "&");
else if (xml && c == '"') extract_astring_cat(alloc, string, """);
else if (xml && c == '\'') extract_astring_cat(alloc, string, "'");
/* Expand ligatures. */
else if (ascii_ligatures && c == 0xFB00)
{
if (extract_astring_cat(alloc, string, "ff")) goto end;
}
else if (ascii_ligatures && c == 0xFB01)
{
if (extract_astring_cat(alloc, string, "fi")) goto end;
}
else if (ascii_ligatures && c == 0xFB02)
{
if (extract_astring_cat(alloc, string, "fl")) goto end;
}
else if (ascii_ligatures && c == 0xFB03)
{
if (extract_astring_cat(alloc, string, "ffi")) goto end;
}
else if (ascii_ligatures && c == 0xFB04)
{
if (extract_astring_cat(alloc, string, "ffl")) goto end;
}
/* Convert some special characters to ascii. */
else if (ascii_dash && c == 0x2212)
{
if (extract_astring_catc(alloc, string, '-')) goto end;
}
else if (ascii_apostrophe && c == 0x2019)
{
if (extract_astring_catc(alloc, string, '\'')) goto end;
}
/* Output ASCII verbatim. */
else if (c >= 32 && c <= 127)
{
if (extract_astring_catc(alloc, string, (char) c)) goto end;
}
/* Escape all other characters. */
else
{
if (xml)
{
char buffer[32];
if (c < 32
&& (c != 0x9 && c != 0xa && c != 0xd)
)
{
/* Illegal xml character; see
https://www.w3.org/TR/xml/#charsets. We replace with
0xfffd, the unicode replacement character. */
c = 0xfffd;
}
snprintf(buffer, sizeof(buffer), "&#x%x;", c);
if (extract_astring_cat(alloc, string, buffer)) goto end;
}
else
{
/* Use utf8. */
if (c < 0x80)
{
if (extract_astring_catc(alloc, string, (char) c)) return -1;
}
else if (c < 0x0800)
{
char cc[2] =
{
(char) (((c >> 6) & 0x1f) | 0xc0),
(char) (((c >> 0) & 0x3f) | 0x80)
};
if (extract_astring_catl(alloc, string, cc, sizeof(cc))) return -1;
}
else if (c < 0x10000)
{
char cc[3] =
{
(char) (((c >> 12) & 0x0f) | 0xe0),
(char) (((c >> 6) & 0x3f) | 0x80),
(char) (((c >> 0) & 0x3f) | 0x80)
};
if (extract_astring_catl(alloc, string, cc, sizeof(cc))) return -1;
}
else if (c < 0x110000)
{
char cc[4] =
{
(char) (((c >> 18) & 0x07) | 0xf0),
(char) (((c >> 12) & 0x3f) | 0x80),
(char) (((c >> 6) & 0x3f) | 0x80),
(char) (((c >> 0) & 0x3f) | 0x80)
};
if (extract_astring_catl(alloc, string, cc, sizeof(cc))) return -1;
}
else
{
/* Use replacement character. */
char cc[4] = { (char) 0xef, (char) 0xbf, (char) 0xbd, 0};
if (extract_astring_catl(alloc, string, cc, sizeof(cc))) return -1;
}
}
}
ret = 0;
end:
return ret;
}
int extract_astring_catc_unicode_xml(extract_alloc_t* alloc, extract_astring_t* string, int c)
{
/* Fixme, better to use ascii_ligatures=0, but that requires updates to
expected output files. */
return extract_astring_catc_unicode(
alloc,
string,
c,
1 /*xml*/,
1 /*ascii_ligatures*/,
0 /*ascii_dash*/,
0 /*ascii_apostrophe*/
);
}
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