#ifndef lint
static char *rcsid = "$Id: delimitermap.c,v 1.1 2003/06/04 00:25:52 marka Exp $";
#endif
#include <config.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <idn/result.h>
#include <idn/assert.h>
#include <idn/logmacro.h>
#include <idn/delimitermap.h>
#include <idn/util.h>
#include <idn/debug.h>
#include <idn/ucs4.h>
struct idn_delimitermap {
int ndelimiters;
int delimiter_size;
unsigned long *delimiters;
int reference_count;
};
#define DELIMITERMAP_INITIAL_DELIMITER_SIZE 4
#define UNICODE_MAX 0x10ffff
#define IS_SURROGATE_HIGH(v) (0xd800 <= (v) && (v) <= 0xdbff)
#define IS_SURROGATE_LOW(v) (0xdc00 <= (v) && (v) <= 0xdfff)
idn_result_t
idn_delimitermap_create(idn_delimitermap_t *ctxp) {
idn_delimitermap_t ctx = NULL;
idn_result_t r;
assert(ctxp != NULL);
TRACE(("idn_delimitermap_create()\n"));
ctx = (idn_delimitermap_t) malloc(sizeof(struct idn_delimitermap));
if (ctx == NULL) {
WARNING(("idn_mapper_create: malloc failed\n"));
r = idn_nomemory;
goto ret;
}
ctx->delimiters = (unsigned long *) malloc(sizeof(unsigned long)
* DELIMITERMAP_INITIAL_DELIMITER_SIZE);
if (ctx->delimiters == NULL) {
r = idn_nomemory;
goto ret;
}
ctx->ndelimiters = 0;
ctx->delimiter_size = DELIMITERMAP_INITIAL_DELIMITER_SIZE;
ctx->reference_count = 1;
*ctxp = ctx;
r = idn_success;
ret:
if (r != idn_success)
free(ctx);
TRACE(("idn_delimitermap_create(): %s\n", idn_result_tostring(r)));
return (r);
}
void
idn_delimitermap_destroy(idn_delimitermap_t ctx) {
assert(ctx != NULL);
TRACE(("idn_delimitermap_destroy()\n"));
ctx->reference_count--;
if (ctx->reference_count <= 0) {
TRACE(("idn_mapper_destroy(): the object is destroyed\n"));
free(ctx->delimiters);
free(ctx);
} else {
TRACE(("idn_delimitermap_destroy(): "
"update reference count (%d->%d)\n",
ctx->reference_count + 1, ctx->reference_count));
}
}
void
idn_delimitermap_incrref(idn_delimitermap_t ctx) {
assert(ctx != NULL);
TRACE(("idn_delimitermap_incrref()\n"));
TRACE(("idn_delimitermap_incrref: update reference count (%d->%d)\n",
ctx->reference_count, ctx->reference_count + 1));
ctx->reference_count++;
}
idn_result_t
idn_delimitermap_add(idn_delimitermap_t ctx, unsigned long delimiter) {
idn_result_t r;
assert(ctx != NULL && ctx->ndelimiters <= ctx->delimiter_size);
TRACE(("idn_delimitermap_add(delimiter=\\x%04lx)\n", delimiter));
if (delimiter == 0 || delimiter > UNICODE_MAX ||
IS_SURROGATE_HIGH(delimiter) || IS_SURROGATE_LOW(delimiter)) {
r = idn_invalid_codepoint;
goto ret;
}
if (ctx->ndelimiters == ctx->delimiter_size) {
unsigned long *new_delimiters;
new_delimiters = (unsigned long *) realloc(ctx->delimiters,
sizeof(unsigned long) * ctx->delimiter_size * 2);
if (new_delimiters == NULL) {
r = idn_nomemory;
goto ret;
}
ctx->delimiters = new_delimiters;
ctx->delimiter_size *= 2;
}
ctx->delimiters[ctx->ndelimiters] = delimiter;
ctx->ndelimiters++;
r = idn_success;
ret:
TRACE(("idn_delimitermap_add(): %s\n", idn_result_tostring(r)));
return (r);
}
idn_result_t
idn_delimitermap_addall(idn_delimitermap_t ctx, unsigned long *delimiters,
int ndelimiters) {
idn_result_t r;
int i;
assert(ctx != NULL && delimiters != NULL);
TRACE(("idn_delimitermap_addall(ndelimiters=%d)\n", ndelimiters));
for (i = 0; i < ndelimiters; i++) {
r = idn_delimitermap_add(ctx, *delimiters);
if (r != idn_success)
goto ret;
delimiters++;
}
r = idn_success;
ret:
TRACE(("idn_delimitermap_addall(): %s\n", idn_result_tostring(r)));
return (r);
}
idn_result_t
idn_delimitermap_map(idn_delimitermap_t ctx, const unsigned long *from,
unsigned long *to, size_t tolen) {
static const unsigned long default_delimiters[] =
{ 0x002e,
0x3002,
0xff0e,
0xff61,
0x0000 };
unsigned long *to_org = to;
idn_result_t r;
int i, j;
int found;
assert(ctx != NULL && from != NULL && to != NULL);
TRACE(("idn_delimitermap_map(from=\"%s\", tolen=%d)\n",
idn__debug_ucs4xstring(from, 50), (int)tolen));
while (*from != '\0') {
found = 0;
if (tolen < 1) {
r = idn_buffer_overflow;
goto ret;
}
for (j = 0; default_delimiters[j] != 0x0000; j++) {
if (default_delimiters[j] == *from) {
found = 1;
break;
}
}
if (!found) {
for (i = 0; i < ctx->ndelimiters; i++) {
if (ctx->delimiters[i] == *from) {
found = 1;
break;
}
}
}
if (found)
*to = '.';
else
*to = *from;
from++;
to++;
tolen--;
}
if (tolen < 1) {
r = idn_buffer_overflow;
goto ret;
}
*to = '\0';
r = idn_success;
ret:
if (r == idn_success) {
TRACE(("idn_delimitermap_map(): success (to=\"%s\")\n",
idn__debug_ucs4xstring(to_org, 50)));
} else {
TRACE(("idn_delimitermap_map(): %s\n",
idn_result_tostring(r)));
}
return (r);
}