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b2/boom.c: add substitution query mode (option -q)

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This commit is contained in:
Werner Almesberger 2012-05-20 19:01:49 -03:00
parent 04d858e047
commit 8e6357f4fa
1 changed files with 46 additions and 8 deletions
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54
b2/boom.c
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@ -14,19 +14,53 @@
#include <stdio.h>
#include <string.h>
#include "util.h"
#include "lang.h"
#include "subex.h"
static struct var *vars = NULL, **last_var = &vars;
static void add_var(const char *arg)
{
char *tmp = stralloc(arg);
char *eq;
eq = strchr(tmp, '=');
if (!eq) {
fprintf(stderr, "no = in variable setting\n");
exit(1);
}
*eq = 0;
*last_var = make_var(tmp, eq+1);
last_var = &(*last_var)->next;
}
static void do_substitutions(void)
{
struct var *out;
const struct var *var;
out = substitute(substitutions, vars);
for (var = out; var; var = var->next)
printf("%s=%s\n", var->name, var->value);
free_vars(out);
}
static void usage(const char *name)
{
fprintf(stderr,
"usage: %s file [[-type] file ...] ...\n\n"
"usage: %s file [[-type] file ...] [-q var=value ...] ...\n\n"
" file types:\n"
" -c characteristics\n"
" -i inventory\n"
" -x currency exchange\n"
" -p providers\n"
" -s substitutions\n"
" -q var=value ...\n"
, name);
exit(1);
}
@ -34,26 +68,30 @@ static void usage(const char *name)
int main(int argc, char **argv)
{
void (*parse)(const char *name) = parse_hierarchy;
void (*process)(const char *name) = parse_hierarchy;
int i;
for (i = 1; i != argc; i++) {
if (*argv[i] == '-') {
if (!strcmp(argv[i], "-c"))
parse = parse_characteristics;
process = parse_characteristics;
else if (!strcmp(argv[i], "-i"))
parse = parse_inventory;
process = parse_inventory;
else if (!strcmp(argv[i], "-x"))
parse = parse_currencies;
process = parse_currencies;
else if (!strcmp(argv[i], "-p"))
parse = parse_providers;
process = parse_providers;
else if (!strcmp(argv[i], "-s"))
parse = parse_substitutions;
process = parse_substitutions;
else if (!strcmp(argv[i], "-q"))
process = add_var;
else
usage(*argv);
} else {
parse(argv[i]);
process(argv[i]);
}
}
if (vars)
do_substitutions();
return 0;
}