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5191 | serge | 1 | /* Utility to pick a temporary filename prefix. |
2 | Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc. |
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3 | |||
4 | This file is part of the libiberty library. |
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5 | Libiberty is free software; you can redistribute it and/or |
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6 | modify it under the terms of the GNU Library General Public |
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7 | License as published by the Free Software Foundation; either |
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8 | version 2 of the License, or (at your option) any later version. |
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9 | |||
10 | Libiberty is distributed in the hope that it will be useful, |
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11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 | Library General Public License for more details. |
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14 | |||
15 | You should have received a copy of the GNU Library General Public |
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16 | License along with libiberty; see the file COPYING.LIB. If not, |
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17 | write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, |
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18 | Boston, MA 02110-1301, USA. */ |
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19 | |||
20 | #ifdef HAVE_CONFIG_H |
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21 | #include "config.h" |
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22 | #endif |
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23 | |||
24 | #include |
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25 | #include |
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26 | #ifdef HAVE_UNISTD_H |
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27 | #include |
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28 | #endif |
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29 | #ifdef HAVE_STDLIB_H |
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30 | #include |
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31 | #endif |
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32 | #ifdef HAVE_STRING_H |
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33 | #include |
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34 | #endif |
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35 | |||
36 | #include "libiberty.h" |
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37 | |||
38 | /* Name of temporary file. |
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39 | mktemp requires 6 trailing X's. */ |
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40 | #define TEMP_FILE "ccXXXXXX" |
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41 | #define TEMP_FILE_LEN (sizeof(TEMP_FILE) - 1) |
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42 | |||
43 | /* |
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44 | |||
45 | @deftypefn Extension char* choose_temp_base (void) |
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46 | |||
47 | Return a prefix for temporary file names or @code{NULL} if unable to |
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48 | find one. The current directory is chosen if all else fails so the |
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49 | program is exited if a temporary directory can't be found (@code{mktemp} |
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50 | fails). The buffer for the result is obtained with @code{xmalloc}. |
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51 | |||
52 | This function is provided for backwards compatibility only. Its use is |
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53 | not recommended. |
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54 | |||
55 | @end deftypefn |
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56 | |||
57 | */ |
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58 | |||
59 | char * |
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60 | choose_temp_base (void) |
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61 | { |
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62 | const char *base = choose_tmpdir (); |
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63 | char *temp_filename; |
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64 | int len; |
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65 | |||
66 | len = strlen (base); |
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67 | temp_filename = XNEWVEC (char, len + TEMP_FILE_LEN + 1); |
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68 | strcpy (temp_filename, base); |
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69 | strcpy (temp_filename + len, TEMP_FILE); |
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70 | |||
71 | if (mktemp (temp_filename) == 0) |
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72 | abort (); |
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73 | return temp_filename; |
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74 | } |