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/* extstring.c
* SPDX-License-Identifier: BSD-3-Clause
*/
#define USE_SECURE_MEM
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "extlib.h"
enum gfxnums {
num_BOLD = 1,
num_DIM,
num_ITALIC,
num_UNDERLINE,
num_BLINKING,
num_INVERSE,
num_HIDDEN,
num_STRIKETHROUGH,
};
char *
strlwr (char *s)
{
unsigned char *p = (unsigned char *) s;
while (*p)
{
*p = tolower ((unsigned char) *p);
p++;
}
return s;
}
char *
strupr (char *s)
{
unsigned char *p = (unsigned char *) s;
while (*p)
{
*p = toupper ((unsigned char) *p);
p++;
}
return s;
}
char *
trim (char *s, int *rem_front, int *rem_back)
{
char *result = strdup (s);
char *end;
while (isspace ((unsigned char) *result))
{
result++;
if (rem_front)
*rem_front += 1;
}
if (*result == 0)
return result;
end = result + strlen (result) - 1;
while (end > result && isspace ((unsigned char) *end))
{
end--;
if (rem_back)
*rem_back += 1;
}
end[1] = '\0';
return result;
}
char *
replace_str (char *s, char *old, char *replace)
{
char *result;
int i, cnt = 0;
size_t new_size = strlen (replace);
size_t old_size = strlen (old);
for (i = 0; s[i] != '\0'; i++)
{
if (strstr (&s[i], old) == &s[i])
{
cnt++;
i += old_size - 1;
}
}
result = (char *) malloc (i + cnt * (new_size - old_size) + 1);
i = 0;
while (*s)
{
if (strstr (s, old) == s)
{
strcpy (&result[i], replace);
i += new_size;
s += old_size;
}
else
result[i++] = *s++;
}
result[i] = '\0';
return result;
};
char *
join_str (char **s, size_t len, char *delim)
{
char *ret = strdup (s[0]);
size_t ret_len = strlen (delim) * len + strlen (ret) + 1;
size_t old_ret_len = ret_len;
for (int i = 1; i < len; i++)
{
char *ret_tmp = malloc (ret_len + strlen (s[i])); // i should use realloc here but that breaks on musl so malloc it is :3
ret_len += strlen (s[i]) + 1;
if (ret_tmp != NULL) {
sprintf (ret_tmp, "%s%s%s", ret, delim, s[i]);
free_secure ((void **) &ret, strlen (ret));
ret = ret_tmp;
}
}
return ret;
}
// all freed strings in this function dont contain confidential data
// so free_secure isnt necessary
#undef free
void
append_gfxsqnc (char **escape_sqnc, size_t *sqnc_size, int gfx_num)
{
size_t gfxbase_len = strlen ("\e[XXm")+1;
char *tmp_sqnc = malloc (*sqnc_size + gfxbase_len);
*sqnc_size += gfxbase_len;
sprintf (tmp_sqnc, "%s\e[%dm", *escape_sqnc, gfx_num);
free (*escape_sqnc);
*escape_sqnc = tmp_sqnc;
}
char *
strfmt (char *s, struct style fmt)
{
size_t gfxbase_len = strlen ("\e[XXm")+1;
size_t sqnc_size = strlen ("\e[0m") + strlen (s)+1;
char *escape_sqnc = strdup ("");
if (fmt.color > 0) {
char *tmp_sqnc = malloc (sqnc_size + strlen ("\e[38;5;m")+4);
sqnc_size += strlen ("\e[38;5;m")+4;
sprintf (tmp_sqnc, "%s\e[%d;5;%dm", escape_sqnc, fmt.background ? 48 : 38, fmt.color);
free (escape_sqnc);
escape_sqnc = tmp_sqnc;
}
if ((fmt.styles & BOLD))
append_gfxsqnc (&escape_sqnc, &sqnc_size, num_BOLD);
if ((fmt.styles & DIM))
append_gfxsqnc (&escape_sqnc, &sqnc_size, num_DIM);
if ((fmt.styles & ITALIC))
append_gfxsqnc (&escape_sqnc, &sqnc_size, num_ITALIC);
if ((fmt.styles & UNDERLINE))
append_gfxsqnc (&escape_sqnc, &sqnc_size, num_UNDERLINE);
if ((fmt.styles & BLINKING))
append_gfxsqnc (&escape_sqnc, &sqnc_size, num_BLINKING);
if ((fmt.styles & INVERSE))
append_gfxsqnc (&escape_sqnc, &sqnc_size, num_INVERSE);
if ((fmt.styles & HIDDEN))
append_gfxsqnc (&escape_sqnc, &sqnc_size, num_HIDDEN);
if ((fmt.styles & STRIKETHROUGH))
append_gfxsqnc (&escape_sqnc, &sqnc_size, num_STRIKETHROUGH);
if (strlen (escape_sqnc) <= 2) {
free (escape_sqnc);
return strdup (s);
}
sprintf (escape_sqnc, "%s%s\e[0m", escape_sqnc, s);
return escape_sqnc;
}
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