tools/winegcc/utils.c

   1 /*
   2  * Useful functions for winegcc/winewrap
   3  *
   4  * Copyright 2000 Francois Gouget
   5  * Copyright 2002 Dimitrie O. Paun
   6  * Copyright 2003 Richard Cohen
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #include <stdio.h>
  26 #include <string.h>
  27 #include <stdarg.h>
  28 #include <stdlib.h>
  29 #include <errno.h>
  30
  31 #include "utils.h"
  32
  33 #if !defined(min)
  34 # define min(x,y) (((x) < (y)) ? (x) : (y))
  35 #endif
  36
  37 int verbose = 0;
  38
  39 void error(const char* s, ...)
  40 {
  41     va_list ap;
  42
  43     va_start(ap, s);
  44     fprintf(stderr, "winegcc: ");
  45     vfprintf(stderr, s, ap);
  46     va_end(ap);
  47     exit(2);
  48 }
  49
  50 void* xmalloc(size_t size)
  51 {
  52     void* p;
  53
  54     if ((p = malloc (size)) == NULL)
  55         error("Could not malloc %d bytes\n", size);
  56
  57     return p;
  58 }
  59
  60 void *xrealloc(void* p, size_t size)
  61 {
  62     void* p2 = realloc (p, size);
  63     if (size && !p2)
  64         error("Could not realloc %d bytes\n", size);
  65
  66     return p2;
  67 }
  68
  69 int strendswith(const char* str, const char* end)
  70 {
  71     int l = strlen(str);
  72     int m = strlen(end);
  73
  74     return l >= m && strcmp(str + l - m, end) == 0;
  75 }
  76
  77 char* strmake(const char* fmt, ...)
  78 {
  79     int n;
  80     size_t size = 100;
  81     va_list ap;
  82
  83     while (1)
  84     {
  85         char *p = xmalloc (size);
  86         va_start(ap, fmt);
  87         n = vsnprintf (p, size, fmt, ap);
  88         va_end(ap);
  89         if (n == -1) size *= 2;
  90         else if ((size_t)n >= size) size = n + 1;
  91         else return p;
  92         free(p);
  93     }
  94 }
  95
  96 strarray* strarray_alloc(void)
  97 {
  98     strarray* arr = xmalloc(sizeof(*arr));
  99     arr->maximum = arr->size = 0;
 100     arr->base = NULL;
 101     return arr;
 102 }
 103
 104 void strarray_free(strarray* arr)
 105 {
 106     free(arr->base);
 107     free(arr);
 108 }
 109
 110 void strarray_add(strarray* arr, const char* str)
 111 {
 112     if (arr->size == arr->maximum)
 113     {
 114         arr->maximum += 10;
 115         arr->base = xrealloc(arr->base, sizeof(*(arr->base)) * arr->maximum);
 116     }
 117     arr->base[arr->size++] = str;
 118 }
 119
 120 void strarray_del(strarray* arr, unsigned int i)
 121 {
 122     if (i >= arr->size) error("Invalid index i=%d\n", i);
 123     memmove(&arr->base[i], &arr->base[i + 1], (arr->size - i - 1) * sizeof(arr->base[0]));
 124     arr->size--;
 125 }
 126
 127 void strarray_addall(strarray* arr, const strarray* from)
 128 {
 129     unsigned int i;
 130
 131     for (i = 0; i < from->size; i++)
 132         strarray_add(arr, from->base[i]);
 133 }
 134
 135 strarray* strarray_dup(const strarray* arr)
 136 {
 137     strarray* dup = strarray_alloc();
 138     unsigned int i;
 139
 140     for (i = 0; i < arr->size; i++)
 141         strarray_add(dup, arr->base[i]);
 142
 143     return dup;
 144 }
 145
 146 strarray* strarray_fromstring(const char* str, const char* delim)
 147 {
 148     strarray* arr = strarray_alloc();
 149     char* buf = strdup(str);
 150     const char* tok;
 151
 152     for(tok = strtok(buf, delim); tok; tok = strtok(0, delim))
 153         strarray_add(arr, strdup(tok));
 154
 155     free(buf);
 156     return arr;
 157 }
 158
 159 char* strarray_tostring(const strarray* arr, const char* sep)
 160 {
 161     char *str, *newstr;
 162     unsigned int i;
 163
 164     str = strmake("%s", arr->base[0]);
 165     for (i = 1; i < arr->size; i++)
 166     {
 167         newstr = strmake("%s%s%s", str, sep, arr->base[i]);
 168         free(str);
 169         str = newstr;
 170     }
 171
 172     return str;
 173 }
 174
 175 char* get_basename(const char* file)
 176 {
 177     const char* name;
 178     char *base_name, *p;
 179
 180     if ((name = strrchr(file, '/'))) name++;
 181     else name = file;
 182
 183     base_name = strdup(name);
 184     if ((p = strrchr(base_name, '.'))) *p = 0;
 185
 186     return base_name;
 187 }
 188
 189 void create_file(const char* name, int mode, const char* fmt, ...)
 190 {
 191     va_list ap;
 192     FILE *file;
 193
 194     if (verbose) printf("Creating file %s\n", name);
 195     va_start(ap, fmt);
 196     if ( !(file = fopen(name, "w")) )
 197         error("Unable to open %s for writing\n", name);
 198     vfprintf(file, fmt, ap);
 199     va_end(ap);
 200     fclose(file);
 201     chmod(name, mode);
 202 }
 203
 204 file_type get_file_type(const char* filename)
 205 {
 206     /* see tools/winebuild/res32.c: check_header for details */
 207     static const char res_sig[] = { 0,0,0,0, 32,0,0,0, 0xff,0xff, 0,0, 0xff,0xff, 0,0, 0,0,0,0, 0,0, 0,0, 0,0,0,0, 0,0,0,0 };
 208     char buf[sizeof(res_sig)];
 209     int fd, cnt;
 210
 211     fd = open( filename, O_RDONLY );
 212     if (fd == -1) return file_na;
 213     cnt = read(fd, buf, sizeof(buf));
 214     close( fd );
 215     if (cnt == -1) return file_na;
 216
 217     if (cnt == sizeof(res_sig) && !memcmp(buf, res_sig, sizeof(res_sig))) return file_res;
 218     if (strendswith(filename, ".o")) return file_obj;
 219     if (strendswith(filename, ".a")) return file_arh;
 220     if (strendswith(filename, ".res")) return file_res;
 221     if (strendswith(filename, ".so")) return file_so;
 222     if (strendswith(filename, ".dylib")) return file_so;
 223     if (strendswith(filename, ".def")) return file_def;
 224     if (strendswith(filename, ".spec")) return file_spec;
 225     if (strendswith(filename, ".rc")) return file_rc;
 226
 227     return file_other;
 228 }
 229
 230 static char* try_lib_path(const char* dir, const char* pre,
 231                           const char* library, const char* ext,
 232                           file_type expected_type)
 233 {
 234     char *fullname;
 235     file_type type;
 236
 237     /* first try a subdir named from the library we are looking for */
 238     fullname = strmake("%s/%s/%s%s%s", dir, library, pre, library, ext);
 239     if (verbose > 1) fprintf(stderr, "Try %s...", fullname);
 240     type = get_file_type(fullname);
 241     if (verbose > 1) fprintf(stderr, type == expected_type ? "FOUND!\n" : "no\n");
 242     if (type == expected_type) return fullname;
 243     free( fullname );
 244
 245     fullname = strmake("%s/%s%s%s", dir, pre, library, ext);
 246     if (verbose > 1) fprintf(stderr, "Try %s...", fullname);
 247     type = get_file_type(fullname);
 248     if (verbose > 1) fprintf(stderr, type == expected_type ? "FOUND!\n" : "no\n");
 249     if (type == expected_type) return fullname;
 250     free( fullname );
 251     return 0;
 252 }
 253
 254 static file_type guess_lib_type(const char* dir, const char* library, char** file)
 255 {
 256     /* Unix shared object */
 257     if ((*file = try_lib_path(dir, "lib", library, ".so", file_so)))
 258         return file_so;
 259
 260     /* Mach-O (Darwin/Mac OS X) Dynamic Library behaves mostly like .so */
 261     if ((*file = try_lib_path(dir, "lib", library, ".dylib", file_so)))
 262         return file_so;
 263
 264     /* Windows DLL */
 265     if ((*file = try_lib_path(dir, "lib", library, ".def", file_def)))
 266         return file_dll;
 267     if ((*file = try_lib_path(dir, "", library, ".def", file_def)))
 268         return file_dll;
 269
 270     /* Unix static archives */
 271     if ((*file = try_lib_path(dir, "lib", library, ".a", file_arh)))
 272         return file_arh;
 273
 274     return file_na;
 275 }
 276
 277 file_type get_lib_type(strarray* path, const char* library, char** file)
 278 {
 279     unsigned int i;
 280
 281     for (i = 0; i < path->size; i++)
 282     {
 283         file_type type = guess_lib_type(path->base[i], library, file);
 284         if (type != file_na) return type;
 285     }
 286     return file_na;
 287 }
 288
 289 void spawn(const strarray* prefix, const strarray* args, int ignore_errors)
 290 {
 291     unsigned int i;
 292     int status;
 293     strarray* arr = strarray_dup(args);
 294     const char** argv;
 295     char* prog = 0;
 296
 297     strarray_add(arr, NULL);
 298     argv = arr->base;
 299
 300     if (prefix)
 301     {
 302         for (i = 0; i < prefix->size; i++)
 303         {
 304             const char* p;
 305             struct stat st;
 306
 307             if (!(p = strrchr(argv[0], '/'))) p = argv[0];
 308             free( prog );
 309             prog = strmake("%s/%s", prefix->base[i], p);
 310             if (stat(prog, &st) == 0)
 311             {
 312                 if ((st.st_mode & S_IFREG) && (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
 313                 {
 314                     argv[0] = prog;
 315                     break;
 316                 }
 317             }
 318         }
 319     }
 320
 321     if (verbose)
 322     {
 323         for(i = 0; argv[i]; i++) printf("%s ", argv[i]);
 324         printf("\n");
 325     }
 326
 327     if ((status = spawnvp( _P_WAIT, argv[0], argv)) && !ignore_errors)
 328     {
 329         if (status > 0) error("%s failed\n", argv[0]);
 330         else perror("winegcc");
 331         exit(3);
 332     }
 333
 334     free(prog);
 335     strarray_free(arr);
 336 }