Sweden-Number/tools/specmaker/misc.c

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/*
* Misc functions
*
* Copyright 2000 Jon Griffiths
*/
#include "specmaker.h"
/*******************************************************************
* str_create
*
* Create a single string from many substrings
*/
char *str_create(size_t num_str, ...)
{
va_list args;
size_t len = 1, i = 0;
char *tmp, *t;
va_start (args, num_str);
for (i = 0; i < num_str; i++)
if ((t = va_arg(args, char *)))
len += strlen (t);
va_end (args);
if (!(tmp = (char *) malloc (len)))
fatal ("Out of memory");
tmp[0] = '\0';
va_start (args, num_str);
for (i = 0; i < num_str; i++)
if ((t = va_arg(args, char *)))
strcat (tmp, t);
va_end (args);
return tmp;
}
/*******************************************************************
* str_create_num
*
* Create a single string from many substrings, terminating in a number
*/
char *str_create_num(size_t num_str, int num, ...)
{
va_list args;
size_t len = 8, i = 0;
char *tmp, *t;
va_start (args, num);
for (i = 0; i < num_str; i++)
if ((t = va_arg(args, char *)))
len += strlen (t);
va_end (args);
if (!(tmp = (char *) malloc (len)))
fatal ("Out of memory");
tmp[0] = '\0';
va_start (args, num);
for (i = 0; i < num_str; i++)
if ((t = va_arg(args, char *)))
strcat (tmp, t);
va_end (args);
sprintf (tmp + len - 8, "%d", num);
return tmp;
}
/*******************************************************************
* str_substring
*
* Create a new substring from a string
*/
char *str_substring(const char *start, const char *end)
{
char *newstr;
assert (start && end && end > start);
if (!(newstr = (char *) malloc (end - start + 1)))
fatal ("Out of memory");
memcpy (newstr, start, end - start);
newstr [end - start] = '\0';
return newstr;
}
/*******************************************************************
* str_replace
*
* Swap two strings in another string, in place
* Modified PD code from 'snippets'
*/
char *str_replace (char *str, const char *oldstr, const char *newstr)
{
int oldlen, newlen;
char *p, *q;
if (!(p = strstr(str, oldstr)))
return p;
oldlen = strlen (oldstr);
newlen = strlen (newstr);
memmove (q = p + newlen, p + oldlen, strlen (p + oldlen) + 1);
memcpy (p, newstr, newlen);
return q;
}
/*******************************************************************
* str_match
*
* Locate one string in another, ignoring spaces
*/
const char *str_match (const char *str, const char *match, int *found)
{
assert(str && match && found);
while (*str == ' ') str++;
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if (!strncmp (str, match, strlen (match)))
{
*found = 1;
str += strlen (match);
while (*str == ' ') str++;
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}
else
*found = 0;
return str;
}
/*******************************************************************
* str_find_set
*
* Locate the first occurence of a set of characters in a string
*/
const char *str_find_set (const char *str, const char *findset)
{
assert(str && findset);
while (*str)
{
const char *p = findset;
while (*p)
if (*p++ == *str)
return str;
str++;
}
return NULL;
}
/*******************************************************************
* str_toupper
*
* Uppercase a string
*/
char *str_toupper (char *str)
{
char *save = str;
while (*str)
{
*str = toupper (*str);
str++;
}
return save;
}
/*******************************************************************
* open_file
*
* Open a file returning only on success
*/
FILE *open_file (const char *name, const char *ext, const char *mode)
{
char fname[128];
FILE *fp;
if (((unsigned)snprintf (fname, sizeof (fname), "%s%s%s",
*mode == 'w' ? "./" : "", name, ext) > sizeof (fname)))
fatal ("File name too long");
if (VERBOSE)
printf ("Open file %s\n", fname);
fp = fopen (fname, mode);
if (!fp)
fatal ("Cant open file");
return fp;
}
/*******************************************************************
* fatal
*
* Fatal error handling
*/
void fatal (const char *message)
{
if (errno)
perror (message);
else
puts (message);
do_usage ();
}