diff options
Diffstat (limited to '')
| -rw-r--r-- | jnlib/stringhelp.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/jnlib/stringhelp.c b/jnlib/stringhelp.c index 0d3035e8..d6883e7d 100644 --- a/jnlib/stringhelp.c +++ b/jnlib/stringhelp.c @@ -263,6 +263,52 @@ compare_filenames( const char *a, const char *b ) #endif } +/* Print a BUFFER to stream FP while replacing all control characters + and the character DELIM with standard C eescape sequences. Returns + the number of characters printed. */ +size_t +print_sanitized_buffer (FILE *fp, const void *buffer, size_t length, int delim) +{ + const unsigned char *p = buffer; + size_t count = 0; + + for (; length; length--, p++, count++) + { + if (*p < 0x20 || (*p >= 0x7f && *p < 0xa0) || *p == delim) + { + putc ('\\', fp); + count++; + if (*p == '\n') + putc ('n', fp); + else if (*p == '\r') + putc ('r', fp); + else if (*p == '\f') + putc ('f', fp); + else if (*p == '\v') + putc ('v', fp); + else if (*p == '\b') + putc ('b', fp); + else if (!*p) + putc('0', fp); + else + { + fprintf (fp, "x%02x", *p); + count += 2; + } + } + else + putc (*p, fp); + } + + return count; +} + +size_t +print_sanitized_string (FILE *fp, const char *string, int delim) +{ + return string? print_sanitized_buffer (fp, string, strlen (string), delim):0; +} + /**************************************************** ******** locale insensitive ctype functions ******** @@ -336,6 +382,26 @@ ascii_strcmp( const char *a, const char *b ) } +void * +ascii_memcasemem (const void *haystack, size_t nhaystack, + const void *needle, size_t nneedle) +{ + + if (!nneedle) + return (void*)haystack; /* finding an empty needle is really easy */ + if (nneedle <= nhaystack) + { + const unsigned char *a = haystack; + const unsigned char *b = a + nhaystack - nneedle; + + for (; a <= b; a++) + { + if ( !ascii_memcasecmp (a, needle, nneedle) ) + return (void *)a; + } + } + return NULL; +} /********************************************* ********** missing string functions ********* |