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/* args.h
Routines to simplify argument handling
Part of the swftools package.
Copyright (c) 2001 Matthias Kramm <kramm@quiss.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#ifndef __args_h__
#define __args_h__
#ifndef NO_ARGPARSER
extern int args_callback_option(char*,char*);
extern int args_callback_longoption(char*,char*);
extern int args_callback_command(char*,char*);
extern void args_callback_usage(char*name);
//int argn;
//char**argv;
static void processargs(int argn2,char**argv2)
{
int t;
if(argn2==1)
{
args_callback_usage(argv2[0]);
exit(1);
}
for(t=1;t<argn2;t++)
{
char*next;
if(t<argn2-1) next=argv2[t+1];
else next=0;
if(argv2[t][0]=='-' && argv2[t][1])
{
if(argv2[t][1]=='-')
{
if(!strcmp(&argv2[t][2],"help"))
{
args_callback_usage(argv2[0]);
exit(1);
}
t+=args_callback_longoption(&argv2[t][2],next);
}
else
{
if(strchr("?h",argv2[t][1]))
{
args_callback_usage(argv2[0]);
exit(1);
}
if(argv2[t][1]) // this might be something like e.g. -xvf
{
char buf[2];
int s=1;
int ret;
buf[1]=0;
do{
if(argv2[t][s+1]) {
buf[0] = argv2[t][s];
ret = args_callback_option(buf,&argv2[t][s+1]);
}
else {
t+= args_callback_option(&argv2[t][s], next);
break;
}
s++;
} while(!ret);
}
}
}
else
{
int num = args_callback_command(argv2[t],next);
if(num>2) {
fprintf(stderr, "internal error in command line parsing\n");
exit(1);
}
t+=num;
}
}
}
struct options_t
{
const char*shortoption;
const char*longoption;
};
static int args_long2shortoption(struct options_t*options, char*name, char*val)
{
char*equal = strchr(name,'=');
if (equal) {
*equal = 0;
equal++;
}
while(options->shortoption) {
if(!strcmp(options->longoption, name)) {
char*tmp = (char*)malloc(strlen(options->shortoption)
+(equal?strlen(equal)+2:2));
strcpy(tmp, options->shortoption);
if(equal) {
//strcpy(&tmp[strlen(tmp)], equal);
int ret = args_callback_option(tmp, equal);
if(!ret) {
fprintf(stderr, "Warning: Option --%s takes no parameter.\n", name);
}
return 0;
}
return args_callback_option(tmp,val);
}
options++;
}
fprintf(stderr, "Unknown option: --%s\n", name);
exit(1);
}
#endif
/* check whether the value t is in a given range.
examples: 3 is in range 1-10: true
7 is in range 2-4,6,8-10: false
9 is in range 1,2,3-12: true
*/
static char is_in_range(int t, char*irange)
{
char*pos = irange;
char*digits;
int num;
char range = 0;
int last=0;
char tmp;
if(!irange) // no range resembles (-OO,OO)
return 1;
while(*pos)
{
while(*pos == ' ' || *pos == '\r' || *pos == '\n' || *pos == '\t')
pos++;
digits = pos;
while(*digits>='0' && *digits<='9')
digits++;
if(digits == pos) {
fprintf(stderr, "Error: \"%s\" is not a valid format (digit expected)\n",irange);
exit(1);
}
tmp=*digits;*digits=0;
num = atoi(pos);
*digits=tmp;
pos = digits;
while(*pos == ' ' || *pos == '\r' || *pos == '\n' || *pos == '\t')
pos++;
if(range && last<=t && num>=t)
return 1;
if(range) {
range = 0;
if(*pos)
pos ++;
continue;
}
if(*pos=='-')
{
if(range) {
fprintf(stderr, "Error: \"%s\" is not a valid format (too many '-'s)\n",irange);
exit(1);
}
last = num;
range = 1;
if(*pos)
pos ++;
continue;
}
else
{
/* if it isn't a '-', we assume it is a seperator like
',', ';', ':', whatever. */
if(t == num)
return 1;
if(*pos)
pos ++;
continue;
}
}
if(range && last<=t)
return 1;
return 0;
}
static char* filename2template(char*filename, int*startindex)
{
int l = strlen(filename);
char*newname = (char*)malloc(l+5);
/* first look whether the file is already numbered */
while(1) {
l--;
if(l<0 || strchr("0123456789", filename[l]))
break;
};
if(l>=0) {
int lastdigit=l;
int firstdigit=l;
while(firstdigit && strchr("0123456789", filename[firstdigit-1]))
firstdigit--;
*startindex = atoi(filename+firstdigit);
memcpy(newname, filename, firstdigit);
sprintf(newname+firstdigit, "%%%dd", lastdigit+1-firstdigit);
strcat(newname+firstdigit, filename+lastdigit+1);
return newname;
}
/* if it isn't, try to paste a %d between filename and extension */
char*dot = strrchr(filename, '.');
if(dot) {
int pos = dot-filename;
memcpy(newname, filename, pos);
newname[pos++] = '.';
newname[pos++] = '%';
newname[pos++] = 'd';
strcpy(newname+pos, dot);
*startindex = 1;
return newname;
}
/* if that didn't work either, just append the number at the end */
strcpy(newname, filename);
strcat(newname, ".%d");
*startindex = 1;
return newname;
}
#endif //__args_h__
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