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/*
* Gophernicus - Copyright (c) 2009-2018 Kim Holviala <kimholviala@fastmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "gophernicus.h"
/*
* Repeat a character num times and zero-terminate
*/
void strrepeat(char *dest, char c, size_t num)
{
memset(dest, c, num);
dest[num] = '\0';
}
/*
* Replace characters in-place
*/
void strreplace(char *str, char from, char to)
{
while (*str) {
if (*str == from) *str = to;
str++;
}
}
/*
* Cut string to width, return resulting width (UTF-8 aware)
*/
size_t strcut(char *str, size_t width)
{
unsigned char c = '\0';
int w = 0;
int i;
while (width-- && (c = *str++)) {
if (c >= 0x80 && (*str & 0xc0) == 0x80) {
i = 0;
if ((c & 0xf8) == 0xf0) i = 3;
else if ((c & 0xf0) == 0xe0) i = 2;
else if ((c & 0xe0) == 0xc0) i = 1;
while (i--) if (!*str++) break;
}
w++;
}
if (c) *str = '\0';
return w;
}
/*
* Match key and return value (key: value)
*/
char *strkey(char *header, char *key)
{
char *c;
size_t len;
if ((len = strlen(key)) == 0) return NULL;
if (strncasecmp(header, key, len) == MATCH) {
c = header + len;
do { c++; } while (*c == ' ' || *c == '\t');
if (*c != ':') return NULL;
do { c++; } while (*c == ' ' || *c == '\t');
return c;
}
return NULL;
}
/*
* Return last character of a string
*/
char strlast(char *str)
{
int len;
if ((len = (int)strlen(str) - 1) >= 0) return str[len];
else return 0;
}
/*
* Remove CRLF from a string
*/
void chomp(char *str)
{
char *c;
if ((c = strrchr(str, '\n'))) *c = '\0';
if ((c = strrchr(str, '\r'))) *c = '\0';
}
/*
* Return charset name
*/
char *strcharset(int charset)
{
if (charset == AUTO) return "auto";
if (charset == US_ASCII) return "US-ASCII";
if (charset == ISO_8859_1) return "ISO-8859-1";
if (charset == UTF_8) return "UTF-8";
return "(unknown)";
}
/*
* Convert a string between UTF-8, ISO-8859-1 and US-ASCII
*/
void strniconv(int charset, char *out, char *in, size_t outsize)
{
char ascii[] = ASCII;
unsigned long c;
size_t len;
int i;
/* Loop through the input string */
len = strlen(in);
while (--outsize && len > 0) {
/* Get one input char */
c = (unsigned char) *in++;
len--;
/* 7-bit chars are the same in all three charsets */
if (c < 0x80) {
*out++ = (unsigned char) c;
continue;
}
/* Assume ISO-8859-1 which requires 0 extra bytes */
i = 0;
/* UTF-8? (We'll actually check the next char here, not current) */
if ((*in & 0xc0) == 0x80) {
/* Four-byte UTF-8? */
if ((c & 0xf8) == 0xf0 && len >= 3) { c &= 0x07; i = 3; }
/* Three-byte UTF-8? */
else if ((c & 0xf0) == 0xe0 && len >= 2) { c &= 0x0f; i = 2; }
/* Two-byte UTF-8? */
else if ((c & 0xe0) == 0xc0 && len >= 1) { c &= 0x1f; i = 1; }
/* Parse rest of the UTF-8 bytes */
while (i--) {
c <<= 6;
c |= *in++ & 0x3f;
len--;
}
}
/*
* At this point we've got one 32bit UTF character in c and
* we're ready to convert it to the specified output charset
*/
/* Handle UTF-8 */
if (charset == UTF_8) {
i = 0;
/* Two-byte encoding? */
if (c < 0x800 && outsize > 2) { *out++ = (c >> 6) | 0xc0; i = 1; }
/* Three-byte encoding? */
else if (c < 0x10000 && outsize > 3) { *out++ = (c >> 12) | 0xe0; i = 2; }
/* Four-byte encoding? */
else if (c < 0x110000 && outsize > 4) { *out++ = (c >> 18) | 0xf0; i = 3; }
/* Encode rest of the UTF-8 bytes */
while (i--) {
*out++ = ((c >> (i * 6)) & 0x3f) | 0x80;
outsize--;
}
continue;
}
/* Handle ISO-8859-1 */
if (charset == ISO_8859_1) {
if (c >= 0xa0 && c <= 0xff)
*out++ = (unsigned char) c;
else
*out++ = UNKNOWN;
continue;
}
/* Handle all other charsets as 7-bit US-ASCII */
if (c >= 0x80 && c <= 0xff)
*out++ = ascii[c - 0x80];
else
*out++ = UNKNOWN;
}
/* Zero-terminate output */
*out = '\0';
}
/*
* Encode string with #OCT encoding
*/
void strnencode(char *out, const char *in, size_t outsize)
{
unsigned char c;
/* Loop through the input string */
while (--outsize) {
/* End of source? */
if (!(c = *in++)) break;
/* Need to encode the char? */
if (c < '+' || c > '~') {
/* Can we fit the encoded version into outbuffer? */
if (outsize < 5) break;
/* Output encoded char */
snprintf(out, outsize, "#%.3o", c);
out += 4;
}
/* Copy regular chars */
else *out++ = c;
}
/* Zero-terminate output */
*out = '\0';
}
/*
* Decode both %HEX and #OCT encodings
*/
void strndecode(char *out, char *in, size_t outsize)
{
unsigned char c;
unsigned int i;
/* Loop through the input string */
while (--outsize) {
/* End of source? */
if (!(c = *in++)) break;
/* Parse %hex encoding */
if (c == '%' && strlen(in) >= 2) {
sscanf(in, "%2x", &i);
*out++ = i;
in += 2;
continue;
}
/* Parse #octal encoding */
if (c == '#' && strlen(in) >= 3) {
sscanf(in, "%3o", &i);
*out++ = i;
in += 3;
continue;
}
/* Copy non-encoded chars */
*out++ = c;
}
/* Zero-terminate output */
*out = '\0';
}
/*
* Format number to human-readable filesize with unit
*/
void strfsize(char *out, off_t size, size_t outsize)
{
static char *unit[] = { UNITS };
int u;
float s;
/* Start with kilobytes */
s = ((float) size) / 1024;
u = 0;
/* Loop through the units until the size is small enough */
while (s >= 1000 && unit[(u + 1)]) {
s = s / 1024;
u++;
}
/* Format size */
snprintf(out, outsize, "%7.1f %s", s, unit[u]);
}
#ifndef HAVE_STRLCPY
/*
* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <string.h>
/*
* Copy src to string dst of size siz. At most siz-1 characters
* will be copied. Always NUL terminates (unless siz == 0).
* Returns strlen(src); if retval >= siz, truncation occurred.
*/
size_t strlcpy(char *dst, const char *src, size_t siz)
{
char *d = dst;
const char *s = src;
size_t n = siz;
/* Copy as many bytes as will fit */
if (n != 0) {
while (--n != 0) {
if ((*d++ = *s++) == '\0')
break;
}
}
/* Not enough room in dst, add NUL and traverse rest of src */
if (n == 0) {
if (siz != 0)
*d = '\0'; /* NUL-terminate dst */
while (*s++)
;
}
return(s - src - 1); /* count does not include NUL */
}
/*
* Appends src to string dst of size siz (unlike strncat, siz is the
* full size of dst, not space left). At most siz-1 characters
* will be copied. Always NUL terminates (unless siz <= strlen(dst)).
* Returns strlen(src) + MIN(siz, strlen(initial dst)).
* If retval >= siz, truncation occurred.
*/
size_t strlcat(char *dst, const char *src, size_t siz)
{
char *d = dst;
const char *s = src;
size_t n = siz;
size_t dlen;
/* Find the end of dst and adjust bytes left but don't go past end */
while (n-- != 0 && *d != '\0')
d++;
dlen = d - dst;
n = siz - dlen;
if (n == 0)
return(dlen + strlen(s));
while (*s != '\0') {
if (n != 1) {
*d++ = *s;
n--;
}
s++;
}
*d = '\0';
return(dlen + (s - src)); /* count does not include NUL */
}
#endif