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Improve trim() function

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Did not cope well with trailing spaces or entirely blank strings.
This commit is contained in:
Ian Barwick
2017-10-24 15:34:43 +09:00
parent 02b6d3748b
commit c89d59fe96
1 changed files with 5 additions and 1 deletions
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6
strutil.c
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@@ -413,12 +413,16 @@ trim(char *s)
--s2; --s2;
*(s2 + 1) = '\0'; *(s2 + 1) = '\0';
/* String is all whitespace - no need for further processing */
if (s2 + 1 == s1)
return s;
/* Trim left side */ /* Trim left side */
while ((isspace(*s1)) && (s1 < s2)) while ((isspace(*s1)) && (s1 < s2))
++s1; ++s1;
/* Copy finished string */ /* Copy finished string */
memmove(s, s1, s2 - s1); memmove(s, s1, (s2 - s1) + 1);
s[s2 - s1 + 1] = '\0'; s[s2 - s1 + 1] = '\0';
return s; return s;