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1 /*
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2 * Copyright (c) 2000, Red Hat, Inc.
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3 *
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; either version 2 of the License, or
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7 * (at your option) any later version.
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8 *
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9 * A copy of the GNU General Public License can be found at
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10 * http://www.gnu.org/
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11 *
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12 * Written by DJ Delorie <dj@cygnus.com>
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13 *
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14 */
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15
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16 /* See concat.h. Note that we canonicalize the result, this avoids
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17 multiple slashes being interpreted as UNCs. */
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18
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19 #include "win32.h"
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20 #include <stdarg.h>
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21 #include <stdlib.h>
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22 #include <string.h>
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23
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24 char * CDECL
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25 concat (char *s, ...)
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26 {
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27 int len;
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28 char *rv, *arg;
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29 va_list v;
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30
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31 if (!s)
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32 return 0;
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33
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34 len = strlen (s);
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35
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36 va_start (v, s);
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37 while (1)
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38 {
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39 arg = va_arg (v, char *);
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40 if (arg == 0)
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41 break;
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42 len += strlen (arg);
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43 }
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44 va_end (v);
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45
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46 rv = (char *) malloc (len+1);
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47 strcpy (rv, s);
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48 va_start (v, s);
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49 while (1)
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50 {
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51 arg = va_arg (v, char *);
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52 if (arg == 0)
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53 break;
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54 strcat (rv, arg);
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55 }
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56 va_end (v);
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57
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58 /* concat is only used for urls and files, so we can safely
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59 canonicalize the results */
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60 char *d;
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61 for (s=rv; *s; s++)
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62 if (*s == '\\')
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63 *s = '/';
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64 for (s=d=rv; *s; s++)
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65 {
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66 *d++ = *s;
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67 /* special case for URLs */
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68 if (*s == ':' && s[1] == '/' && s[2] == '/' && s > rv+1)
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69 {
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70 *d++ = *++s;
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71 *d++ = *++s;
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72 }
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73 else if (*s == '/')
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74 while (s[1] == '/')
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75 s++;
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76 }
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77 *d = 0;
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78
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79 return rv;
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80 }
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81
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82 char *
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83 backslash (char *s)
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84 {
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85 for (char *t = s; *t; t++)
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86 if (*t == '/')
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87 *t = '\\';
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88 return s;
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89 }
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