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/*
* main.c: command line parsing and top level
*/
#include <stdio.h>
#include <stdlib.h>
#include "buttress.h"
int main(int argc, char **argv) {
char **infiles;
char *outfile;
int nfiles;
int nogo;
int errs;
/*
* Set up initial (default) parameters.
*/
infiles = smalloc(argc*sizeof(char *));
outfile = NULL;
nfiles = 0;
nogo = errs = FALSE;
if (argc == 1) {
usage();
exit(EXIT_SUCCESS);
}
/*
* Parse command line arguments.
*/
while (--argc) {
char *p = *++argv;
if (*p == '-') {
/*
* An option.
*/
while (p && *++p) {
char c = *p;
switch (c) {
case '-':
/*
* Long option.
*/
{
char *opt, *val;
opt = p++; /* opt will have _one_ leading - */
while (*p && *p != '=')
p++; /* find end of option */
if (*p == '=') {
*p++ = '\0';
val = p;
} else
val = NULL;
if (!strcmp(opt, "-help")) {
help();
nogo = TRUE;
} else if (!strcmp(opt, "-version")) {
showversion();
nogo = TRUE;
} else if (!strcmp(opt, "-licence") ||
!strcmp(opt, "-license")) {
licence();
nogo = TRUE;
} else if (!strcmp(opt, "-output")) {
if (!val)
errs = TRUE, error(err_optnoarg, opt);
else
outfile = val;
} else {
errs = TRUE, error(err_nosuchopt, opt);
}
}
p = NULL;
break;
case 'h':
case 'V':
case 'L':
/*
* Option requiring no parameter.
*/
switch (c) {
case 'h':
help();
nogo = TRUE;
break;
case 'V':
showversion();
nogo = TRUE;
break;
case 'L':
licence();
nogo = TRUE;
break;
}
break;
case 'o':
/*
* Option requiring parameter.
*/
p++;
if (!*p && argc > 1)
--argc, p = *++argv;
else if (!*p) {
char opt[2];
opt[0] = c;
opt[1] = '\0';
errs = TRUE, error(err_optnoarg, opt);
}
/*
* Now c is the option and p is the parameter.
*/
switch (c) {
case 'o':
ofile = p;
break;
}
p = NULL; /* prevent continued processing */
break;
default:
/*
* Unrecognised option.
*/
{
char opt[2];
opt[0] = c;
opt[1] = '\0';
errs = TRUE, error(err_nosuchopt, opt);
}
}
}
} else {
/*
* A non-option argument.
*/
infiles[nfiles++] = p;
}
}
if (errs)
exit(EXIT_FAILURE);
if (nogo)
exit(EXIT_SUCCESS);
/*
* Do the work.
*/
if (nfiles == 0) {
error(err_noinput);
usage();
exit(EXIT_FAILURE);
}
{
input in;
paragraph sourceform;
in.filenames = infiles;
in.nfiles = nfiles;
in.currfp = NULL;
in.currindex = 0;
in.npushback = 0;
sourceform = read_input(&in);
if (!sourceform)
exit(EXIT_FAILURE);
sfree(infiles);
/*
* FIXME: having read it, do something with it!
*/
{
paragraph *p;
word *w;
for (p = sourceform; p; p = p->next) {
printf("para %d \"%s\" {\n", p->type, p->keyword);
for (w = p->words; w; w = w->next) {
printf(" word %d \"%s\"\n", w->type, w->text);
}
printf("}\n");
}
}
}
return 0;
}
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