diff options
Diffstat (limited to 'src/text.c')
| -rw-r--r-- | src/text.c | 18 |
1 files changed, 12 insertions, 6 deletions
@@ -1,4 +1,4 @@ -/* $Id: text.c,v 1.2 2002-05-24 04:45:32 rjkaes Exp $ +/* $Id: text.c,v 1.3 2003-03-13 05:20:06 rjkaes Exp $ * * The functions included here are useful for text manipulation. They * replace or augment the standard C string library. These functions @@ -75,24 +75,30 @@ strlcat(char *dst, const char *src, size_t size) * "length" should be the number of characters in the buffer, not including * the trailing NULL. * - * Returns the number of characters removed from the end of the string. + * Returns the number of characters removed from the end of the string. A + * negative return value indicates an error. */ -size_t +ssize_t chomp(char *buffer, size_t length) { size_t chars; assert(buffer != NULL); + assert(length > 0); + + /* Make sure the arguments are valid */ + if (buffer == NULL) return -EFAULT; + if (length < 1) return -ERANGE; chars = 0; --length; while (buffer[length] == '\r' || buffer[length] == '\n') { - buffer[length--] = '\0'; + buffer[length] = '\0'; chars++; - if (length < 0) - break; + /* Stop once we get to zero to prevent wrap-around */ + if (length-- == 0) break; } return chars; |