tts.c - plan9port - [fork] Plan 9 from user space
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       ---
       tts.c (751B)
       ---
            1 /* ts.c: minor string processing subroutines */
            2 #include "t.h"
            3 
            4 int
            5 match (char *s1, char *s2)
            6 {
            7         while (*s1 == *s2)
            8                 if (*s1++ == '\0')
            9                         return(1);
           10                 else
           11                         s2++;
           12         return(0);
           13 }
           14 
           15 
           16 int
           17 prefix(char *small, char *big)
           18 {
           19         int        c;
           20 
           21         while ((c = *small++) == *big++)
           22                 if (c == 0)
           23                         return(1);
           24         return(c == 0);
           25 }
           26 
           27 
           28 int
           29 letter (int ch)
           30 {
           31         if (ch >= 'a' && ch <= 'z')
           32                 return(1);
           33         if (ch >= 'A' && ch <= 'Z')
           34                 return(1);
           35         return(0);
           36 }
           37 
           38 
           39 int
           40 numb(char *str)
           41 {
           42                                 /* convert to integer */
           43         int        k;
           44         for (k = 0; *str >= '0' && *str <= '9'; str++)
           45                 k = k * 10 + *str - '0';
           46         return(k);
           47 }
           48 
           49 
           50 int
           51 digit(int x)
           52 {
           53         return(x >= '0' && x <= '9');
           54 }
           55 
           56 
           57 int
           58 max(int a, int b)
           59 {
           60         return( a > b ? a : b);
           61 }
           62 
           63 
           64 void
           65 tcopy (char *s, char *t)
           66 {
           67         while (*s++ = *t++)
           68                 ;
           69 }