Mercurial > hg > th-libs
annotate th_ioctx.c @ 71:ce49160d2599
Oops, the I/O context initialization was memsetting &pointer instead of
pointer directly, causing nasty (but easily noticeable) memory corruption.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Thu, 15 Nov 2012 19:44:59 +0200 |
parents | d94af48cef7b |
children | 43df05a632cb |
rev | line source |
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1 /* |
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2 * Standard I/O context helpers |
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3 * Programmed and designed by Matti 'ccr' Hamalainen |
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4 * (C) Copyright 2012 Tecnic Software productions (TNSP) |
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5 * |
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6 * Please read file 'COPYING' for information on license and distribution. |
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7 */ |
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8 #include "th_ioctx.h" |
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9 #include "th_string.h" |
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10 |
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11 /* Simple STD I/O contexts |
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12 */ |
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13 BOOL th_ioctx_init(th_ioctx_t *ctx, const char *filename) |
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14 { |
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15 if (ctx == NULL || filename == NULL) |
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16 return FALSE; |
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17 |
71
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18 th_memset(ctx, 0, sizeof(ctx)); |
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19 |
67
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20 if ((ctx->filename = th_strdup(filename)) == NULL) |
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21 return FALSE; |
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22 |
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23 return TRUE; |
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24 } |
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25 |
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26 |
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27 BOOL th_ioctx_open(th_ioctx_t *ctx, const char *filename, const char *mode) |
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28 { |
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29 if (!th_ioctx_init(ctx, filename) || mode == NULL) |
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30 return FALSE; |
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31 |
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32 if ((ctx->fp = fopen(filename, mode)) == NULL) |
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33 return FALSE; |
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34 |
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35 return TRUE; |
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36 } |
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37 |
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38 |
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39 void th_ioctx_close(th_ioctx_t *ctx) |
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40 { |
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41 if (ctx != NULL) |
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42 { |
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43 th_free(ctx->filename); |
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44 ctx->filename = NULL; |
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45 |
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46 if (ctx->fp != NULL) |
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47 fclose(ctx->fp); |
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48 ctx->fp = NULL; |
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49 } |
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50 } |
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51 |
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52 |
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53 void th_ioctx_error(th_ioctx_t *ctx, const int err, const char *fmt, ...) |
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54 { |
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55 char *msg; |
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56 va_list ap; |
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57 |
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58 va_start(ap, fmt); |
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59 msg = th_strdup_vprintf(fmt, ap); |
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60 va_end(ap); |
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61 |
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62 if (ctx->error != NULL) |
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63 ctx->error(ctx, err, msg); |
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64 else |
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65 THERR("'%s' #%d: %s\n", ctx->filename, (unsigned int) ctx->line, msg); |
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66 |
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67 th_free(msg); |
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68 } |
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69 |
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70 |
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71 th_ioctx_t *th_ioctx_new(const char *filename) |
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72 { |
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73 th_ioctx_t *ctx = th_malloc0(sizeof(th_ioctx_t)); |
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74 if (ctx == NULL) |
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75 return NULL; |
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76 |
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77 th_ioctx_init(ctx, filename); |
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78 ctx->allocated = TRUE; |
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79 return ctx; |
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80 } |
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81 |
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82 |
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83 void th_ioctx_free(th_ioctx_t *ctx) |
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84 { |
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85 th_ioctx_close(ctx); |
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86 |
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87 if (ctx->allocated) |
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88 th_free(ctx); |
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89 } |