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1 | 18607dcb | bellard | /*
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2 | 18607dcb | bellard | * Simple C functions to supplement the C library
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3 | 18607dcb | bellard | *
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4 | 18607dcb | bellard | * Copyright (c) 2006 Fabrice Bellard
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5 | 18607dcb | bellard | *
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6 | 18607dcb | bellard | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | 18607dcb | bellard | * of this software and associated documentation files (the "Software"), to deal
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8 | 18607dcb | bellard | * in the Software without restriction, including without limitation the rights
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9 | 18607dcb | bellard | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | 18607dcb | bellard | * copies of the Software, and to permit persons to whom the Software is
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11 | 18607dcb | bellard | * furnished to do so, subject to the following conditions:
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12 | 18607dcb | bellard | *
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13 | 18607dcb | bellard | * The above copyright notice and this permission notice shall be included in
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14 | 18607dcb | bellard | * all copies or substantial portions of the Software.
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15 | 18607dcb | bellard | *
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16 | 18607dcb | bellard | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | 18607dcb | bellard | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | 18607dcb | bellard | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | 18607dcb | bellard | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | 18607dcb | bellard | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | 18607dcb | bellard | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | 18607dcb | bellard | * THE SOFTWARE.
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23 | 18607dcb | bellard | */
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24 | 18607dcb | bellard | #include "vl.h" |
25 | 18607dcb | bellard | |
26 | 18607dcb | bellard | void pstrcpy(char *buf, int buf_size, const char *str) |
27 | 18607dcb | bellard | { |
28 | 18607dcb | bellard | int c;
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29 | 18607dcb | bellard | char *q = buf;
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30 | 18607dcb | bellard | |
31 | 18607dcb | bellard | if (buf_size <= 0) |
32 | 18607dcb | bellard | return;
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33 | 18607dcb | bellard | |
34 | 18607dcb | bellard | for(;;) {
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35 | 18607dcb | bellard | c = *str++; |
36 | 18607dcb | bellard | if (c == 0 || q >= buf + buf_size - 1) |
37 | 18607dcb | bellard | break;
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38 | 18607dcb | bellard | *q++ = c; |
39 | 18607dcb | bellard | } |
40 | 18607dcb | bellard | *q = '\0';
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41 | 18607dcb | bellard | } |
42 | 18607dcb | bellard | |
43 | 18607dcb | bellard | /* strcat and truncate. */
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44 | 18607dcb | bellard | char *pstrcat(char *buf, int buf_size, const char *s) |
45 | 18607dcb | bellard | { |
46 | 18607dcb | bellard | int len;
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47 | 18607dcb | bellard | len = strlen(buf); |
48 | 18607dcb | bellard | if (len < buf_size)
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49 | 18607dcb | bellard | pstrcpy(buf + len, buf_size - len, s); |
50 | 18607dcb | bellard | return buf;
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51 | 18607dcb | bellard | } |
52 | 18607dcb | bellard | |
53 | 18607dcb | bellard | int strstart(const char *str, const char *val, const char **ptr) |
54 | 18607dcb | bellard | { |
55 | 18607dcb | bellard | const char *p, *q; |
56 | 18607dcb | bellard | p = str; |
57 | 18607dcb | bellard | q = val; |
58 | 18607dcb | bellard | while (*q != '\0') { |
59 | 18607dcb | bellard | if (*p != *q)
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60 | 18607dcb | bellard | return 0; |
61 | 18607dcb | bellard | p++; |
62 | 18607dcb | bellard | q++; |
63 | 18607dcb | bellard | } |
64 | 18607dcb | bellard | if (ptr)
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65 | 18607dcb | bellard | *ptr = p; |
66 | 18607dcb | bellard | return 1; |
67 | 18607dcb | bellard | } |
68 | 18607dcb | bellard | |
69 | 18607dcb | bellard | int stristart(const char *str, const char *val, const char **ptr) |
70 | 18607dcb | bellard | { |
71 | 18607dcb | bellard | const char *p, *q; |
72 | 18607dcb | bellard | p = str; |
73 | 18607dcb | bellard | q = val; |
74 | 18607dcb | bellard | while (*q != '\0') { |
75 | 18607dcb | bellard | if (toupper(*p) != toupper(*q))
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76 | 18607dcb | bellard | return 0; |
77 | 18607dcb | bellard | p++; |
78 | 18607dcb | bellard | q++; |
79 | 18607dcb | bellard | } |
80 | 18607dcb | bellard | if (ptr)
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81 | 18607dcb | bellard | *ptr = p; |
82 | 18607dcb | bellard | return 1; |
83 | 18607dcb | bellard | } |