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tstrcasestr.c - iomenu - interactive terminal-based selection menu |
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git clone git://bitreich.org/iomenu git://hg6vgqziawt5s4dj.onion/iomenu (git://bitreich.org) |
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--- |
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tstrcasestr.c (368B) |
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--- |
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1 #include <ctype.h> |
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2 #include <stddef.h> |
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3 |
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4 #include "compat.h" |
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5 |
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6 char * |
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7 strcasestr(const char *str1, const char *str2) |
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8 { |
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9 const char *s1; |
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10 const char *s2; |
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11 |
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12 for (;;) { |
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13 s1 = str1; |
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14 s2 = str2; |
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15 while (*s1 != '\0' && tolower(*s1) == tolower(*s2)) |
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16 s1++, s2++; |
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17 if (*s2 == '\0') |
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18 return (char *) str1; |
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19 if (*s1 == '\0') |
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20 return NULL; |
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21 str1++; |
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22 } |
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23 |
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24 return NULL; |
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25 } |
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