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/** \file
* XML quoting routines.
*/
/* Based on Lauris' repr_quote_write in repr-io.cpp.
*
* Copyright (C) 1999-2002 Lauris Kaplinski
* Copyright (C) 2004 Monash University
*
* May be modified and/or redistributed under the terms of version 2
* of the GNU General Public License: see the file `COPYING'.
*/
#include <cstring>
#include <glib.h>
#include "quote.h"
/** \return strlen(xml_quote_strdup(\a val)) (without doing the malloc).
* \pre val != NULL
*/
static size_t
xml_quoted_strlen(char const *val)
{
size_t ret = 0;
for (; *val != '\0'; val++) {
switch (*val) {
case '"': ret += sizeof(""") - 1; break;
case '&': ret += sizeof("&") - 1; break;
case '<': ret += sizeof("<") - 1; break;
case '>': ret += sizeof(">") - 1; break;
default: ++ret; break;
}
}
return ret;
}
/** Writes \a src (including the NUL byte) to \a dest, doing XML quoting as necessary.
*
* \pre \a src != NULL.
* \pre \a dest must have enough space for (xml_quoted_strlen(src) + 1) bytes.
*/
static void
xml_quote(char *dest, char const *src)
{
#define COPY_LIT(_lit) do { \
size_t cpylen = sizeof(_lit "") - 1; \
memcpy(dest, _lit, cpylen); \
dest += cpylen; \
} while(0)
for (; *src != '\0'; ++src) {
switch (*src) {
case '"': COPY_LIT("""); break;
case '&': COPY_LIT("&"); break;
case '<': COPY_LIT("<"); break;
case '>': COPY_LIT(">"); break;
default: *dest++ = *src; break;
}
}
*dest = '\0';
#undef COPY_LIT
}
/** \return A g_malloc'd buffer containing an XML-quoted version of \a src.
* \pre src != NULL.
*/
char *
xml_quote_strdup(char const *src)
{
size_t const quoted_size = xml_quoted_strlen(src) + 1;
char *ret = (char *) g_malloc(quoted_size);
xml_quote(ret, src);
return ret;
}
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
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