libs/lmo/src/lmo_po2lmo.c

   1 /*
   2  * lmo - Lua Machine Objects - PO to LMO conversion tool
   3  *
   4  *   Copyright (C) 2009 Jo-Philipp Wich <xm@subsignal.org>
   5  *
   6  *  Licensed under the Apache License, Version 2.0 (the "License");
   7  *  you may not use this file except in compliance with the License.
   8  *  You may obtain a copy of the License at
   9  *
  10  *      http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  *  Unless required by applicable law or agreed to in writing, software
  13  *  distributed under the License is distributed on an "AS IS" BASIS,
  14  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  *  See the License for the specific language governing permissions and
  16  *  limitations under the License.
  17  */
  18
  19 #include "lmo.h"
  20
  21 static void die(const char *msg)
  22 {
  23         fprintf(stderr, "Error: %s\n", msg);
  24         exit(1);
  25 }
  26
  27 static void usage(const char *name)
  28 {
  29         fprintf(stderr, "Usage: %s input.po output.lmo\n", name);
  30         exit(1);
  31 }
  32
  33 static void print(const void *ptr, size_t size, size_t nmemb, FILE *stream)
  34 {
  35         if( fwrite(ptr, size, nmemb, stream) == 0 )
  36                 die("Failed to write stdout");
  37 }
  38
  39 static int extract_string(const char *src, char *dest, int len)
  40 {
  41         int pos = 0;
  42         int esc = 0;
  43         int off = -1;
  44
  45         for( pos = 0; (pos < strlen(src)) && (pos < len); pos++ )
  46         {
  47                 if( (off == -1) && (src[pos] == '"') )
  48                 {
  49                         off = pos + 1;
  50                 }
  51                 else if( off >= 0 )
  52                 {
  53                         if( esc == 1 )
  54                         {
  55                                 dest[pos-off] = src[pos];
  56                                 esc = 0;
  57                         }
  58                         else if( src[pos] == '\\' )
  59                         {
  60                                 off++;
  61                                 esc = 1;
  62
  63                         }
  64                         else if( src[pos] != '"' )
  65                         {
  66                                 dest[pos-off] = src[pos];
  67                         }
  68                         else
  69                         {
  70                                 dest[pos-off] = '\0';
  71                                 break;
  72                         }
  73                 }
  74         }
  75
  76         return (off > -1) ? strlen(dest) : -1;
  77 }
  78
  79 int main(int argc, char *argv[])
  80 {
  81         char line[4096];
  82         char key[4096];
  83         char val[4096];
  84         char tmp[4096];
  85         int state  = 0;
  86         int offset = 0;
  87         int length = 0;
  88
  89         FILE *in;
  90         FILE *out;
  91
  92         lmo_entry_t *head  = NULL;
  93         lmo_entry_t *entry = NULL;
  94
  95         if( (argc != 3) || ((in = fopen(argv[1], "r")) == NULL) || ((out = fopen(argv[2], "w")) == NULL) )
  96                 usage(argv[0]);
  97
  98         memset(line, 0, sizeof(key));
  99         memset(key, 0, sizeof(val));
 100         memset(val, 0, sizeof(val));
 101
 102         while( (NULL != fgets(line, sizeof(line), in)) || (state >= 2 && feof(in)) )
 103         {
 104                 if( state == 0 && strstr(line, "msgid \"") == line )
 105                 {
 106                         switch(extract_string(line, key, sizeof(key)))
 107                         {
 108                                 case -1:
 109                                         die("Syntax error in msgid");
 110                                 case 0:
 111                                         continue;
 112                                 default:
 113                                         state = 1;
 114                         }
 115                 }
 116                 else if( state == 1 && strstr(line, "msgstr \"") == line )
 117                 {
 118                         switch(extract_string(line, val, sizeof(val)))
 119                         {
 120                                 case -1:
 121                                         die("Syntax error in msgstr");
 122                                 case 0:
 123                                         state = 2;
 124                                         break;
 125                                 default:
 126                                         state = 3;
 127                         }
 128                 }
 129                 else if( state == 2 )
 130                 {
 131                         switch(extract_string(line, tmp, sizeof(tmp)))
 132                         {
 133                                 case -1:
 134                                         state = 3;
 135                                         break;
 136                                 default:
 137                                         strcat(val, tmp);
 138                         }
 139                 }
 140                 else if( state == 3 )
 141                 {
 142                         if( strlen(key) > 0 && strlen(val) > 0 )
 143                         {
 144                                 if( (entry = (lmo_entry_t *) malloc(sizeof(lmo_entry_t))) != NULL )
 145                                 {
 146                                         memset(entry, 0, sizeof(entry));
 147                                         length = strlen(val) + ((4 - (strlen(val) % 4)) % 4);
 148
 149                                         entry->key_id = htonl(sfh_hash(key, strlen(key)));
 150                                         entry->val_id = htonl(sfh_hash(val, strlen(val)));
 151                                         entry->offset = htonl(offset);
 152                                         entry->length = htonl(strlen(val));
 153
 154                                         print(val, length, 1, out);
 155                                         offset += length;
 156
 157                                         entry->next = head;
 158                                         head = entry;
 159                                 }
 160                                 else
 161                                 {
 162                                         die("Out of memory");
 163                                 }
 164                         }
 165
 166                         state = 0;
 167                         memset(key, 0, sizeof(key));
 168                         memset(val, 0, sizeof(val));
 169                 }
 170
 171                 memset(line, 0, sizeof(line));
 172         }
 173
 174         entry = head;
 175         while( entry != NULL )
 176         {
 177                 print(&entry->key_id, sizeof(uint32_t), 1, out);
 178                 print(&entry->val_id, sizeof(uint32_t), 1, out);
 179                 print(&entry->offset, sizeof(uint32_t), 1, out);
 180                 print(&entry->length, sizeof(uint32_t), 1, out);
 181                 entry = entry->next;
 182         }
 183
 184         if( offset > 0 )
 185         {
 186                 offset = htonl(offset);
 187                 print(&offset, sizeof(uint32_t), 1, out);
 188                 fsync(fileno(out));
 189                 fclose(out);
 190         }
 191         else
 192         {
 193                 fclose(out);
 194                 unlink(argv[2]);
 195         }
 196
 197         fclose(in);
 198         return(0);
 199 }