op-packages/luci-base/src/po2lmo.c
2026-04-23 20:32:35 +08:00

336 lines
6.5 KiB
C

/*
* lmo - Lua Machine Objects - PO to LMO conversion tool
*
* Copyright (C) 2009-2012 Jo-Philipp Wich <jow@openwrt.org>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "lib/lmo.h"
static void die(const char *msg)
{
fprintf(stderr, "Error: %s\n", msg);
exit(1);
}
static void usage(const char *name)
{
fprintf(stderr, "Usage: %s input.po output.lmo\n", name);
exit(1);
}
static void print(const void *ptr, size_t size, size_t nmemb, FILE *stream)
{
int i;
if (fwrite(ptr, size, nmemb, stream) == 0)
die("Failed to write");
for (i = 0; i < ((4 - (size % 4)) % 4); i++)
if (fputc(0, stream))
die("Failed to write");
}
static int extract_string(const char *src, char *dest, int len)
{
int pos = 0;
int esc = 0;
int off = -1;
if (*src == '#')
return -1;
for( pos = 0; (pos < strlen(src)) && (pos < len); pos++ )
{
if( (off == -1) && (src[pos] == '"') )
{
off = pos + 1;
}
else if( off >= 0 )
{
if( esc == 1 )
{
switch (src[pos])
{
case '"':
case '\\':
off++;
break;
}
dest[pos-off] = src[pos];
esc = 0;
}
else if( src[pos] == '\\' )
{
dest[pos-off] = src[pos];
esc = 1;
}
else if( src[pos] != '"' )
{
dest[pos-off] = src[pos];
}
else
{
dest[pos-off] = '\0';
break;
}
}
}
return (off > -1) ? strlen(dest) : -1;
}
static int cmp_index(const void *a, const void *b)
{
uint32_t x = ((const lmo_entry_t *)a)->key_id;
uint32_t y = ((const lmo_entry_t *)b)->key_id;
if (x < y)
return -1;
else if (x > y)
return 1;
return 0;
}
static void print_uint32(uint32_t x, FILE *out)
{
uint32_t y = htonl(x);
print(&y, sizeof(uint32_t), 1, out);
}
static void print_index(void *array, int n, FILE *out)
{
lmo_entry_t *e;
qsort(array, n, sizeof(*e), cmp_index);
for (e = array; n > 0; n--, e++)
{
print_uint32(e->key_id, out);
print_uint32(e->val_id, out);
print_uint32(e->offset, out);
print_uint32(e->length, out);
}
}
enum fieldtype {
UNSPEC = 0,
MSG_CTXT = 1,
MSG_ID = 2,
MSG_ID_PLURAL = 3,
MSG_STR = 4
};
struct msg {
int plural_num;
char *ctxt;
char *id;
char *id_plural;
char *val[10];
size_t len;
char **cur;
};
static void *array = NULL;
static int n_entries = 0;
static size_t offset = 0;
static void print_msg(struct msg *msg, FILE *out)
{
char key[4096], *field, *p;
uint32_t key_id, val_id;
lmo_entry_t *entry;
size_t len;
int esc, i;
if (msg->id && msg->val[0]) {
for (i = 0; i <= msg->plural_num; i++) {
if (!msg->val[i])
continue;
if (msg->ctxt && msg->id_plural)
snprintf(key, sizeof(key), "%s\1%s\2%d", msg->ctxt, msg->id, i);
else if (msg->ctxt)
snprintf(key, sizeof(key), "%s\1%s", msg->ctxt, msg->id);
else if (msg->id_plural)
snprintf(key, sizeof(key), "%s\2%d", msg->id, i);
else
snprintf(key, sizeof(key), "%s", msg->id);
len = strlen(key);
key_id = sfh_hash(key, len, len);
len = strlen(msg->val[i]);
val_id = sfh_hash(msg->val[i], len, len);
if (key_id != val_id) {
n_entries++;
array = realloc(array, n_entries * sizeof(lmo_entry_t));
if (!array)
die("Out of memory");
entry = (lmo_entry_t *)array + n_entries - 1;
entry->key_id = key_id;
entry->val_id = msg->plural_num + 1;
entry->offset = offset;
entry->length = strlen(msg->val[i]);
len = entry->length + ((4 - (entry->length % 4)) % 4);
print(msg->val[i], entry->length, 1, out);
offset += len;
}
}
}
else if (msg->val[0]) {
for (field = msg->val[0], p = field, esc = 0; *p; p++) {
if (esc) {
if (*p == 'n') {
p[-1] = 0;
if (!strncasecmp(field, "Plural-Forms: ", 14)) {
field += 14;
n_entries++;
array = realloc(array, n_entries * sizeof(lmo_entry_t));
if (!array)
die("Out of memory");
entry = (lmo_entry_t *)array + n_entries - 1;
entry->key_id = 0;
entry->val_id = 0;
entry->offset = offset;
entry->length = strlen(field);
len = entry->length + ((4 - (entry->length % 4)) % 4);
print(field, entry->length, 1, out);
offset += len;
break;
}
field = p + 1;
}
esc = 0;
}
else if (*p == '\\') {
esc = 1;
}
}
}
free(msg->ctxt);
free(msg->id);
free(msg->id_plural);
for (i = 0; i < sizeof(msg->val) / sizeof(msg->val[0]); i++)
free(msg->val[i]);
memset(msg, 0, sizeof(*msg));
}
int main(int argc, char *argv[])
{
struct msg msg = { .plural_num = -1 };
char line[4096], tmp[4096];
FILE *in, *out;
ssize_t len;
int eof;
if ((argc != 3) || ((in = fopen(argv[1], "r")) == NULL) || ((out = fopen(argv[2], "w")) == NULL))
usage(argv[0]);
while (1) {
line[0] = 0;
eof = !fgets(line, sizeof(line), in);
if (!strncmp(line, "msgctxt \"", 9)) {
if (msg.id || msg.val[0])
print_msg(&msg, out);
else
free(msg.ctxt);
msg.ctxt = NULL;
msg.cur = &msg.ctxt;
msg.len = 0;
}
else if (eof || !strncmp(line, "msgid \"", 7)) {
if (msg.id || msg.val[0])
print_msg(&msg, out);
else
free(msg.id);
msg.id = NULL;
msg.cur = &msg.id;
msg.len = 0;
}
else if (!strncmp(line, "msgid_plural \"", 14)) {
free(msg.id_plural);
msg.id_plural = NULL;
msg.cur = &msg.id_plural;
msg.len = 0;
}
else if (!strncmp(line, "msgstr \"", 8) || !strncmp(line, "msgstr[", 7)) {
if (line[6] == '[')
msg.plural_num = strtoul(line + 7, NULL, 10);
else
msg.plural_num = 0;
if (msg.plural_num >= 10)
die("Too many plural forms");
free(msg.val[msg.plural_num]);
msg.val[msg.plural_num] = NULL;
msg.cur = &msg.val[msg.plural_num];
msg.len = 0;
}
if (eof)
break;
if (msg.cur) {
len = extract_string(line, tmp, sizeof(tmp));
if (len > 0) {
*msg.cur = realloc(*msg.cur, msg.len + len + 1);
if (!*msg.cur)
die("Out of memory");
memcpy(*msg.cur + msg.len, tmp, len + 1);
msg.len += len;
}
}
}
print_index(array, n_entries, out);
if (offset > 0) {
print_uint32(offset, out);
fsync(fileno(out));
fclose(out);
}
else {
fclose(out);
unlink(argv[2]);
}
fclose(in);
return(0);
}