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#include "stdinc.h"
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#include "9.h"
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typedef struct {
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	char*	argv0;
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	int	(*cmd)(int, char*[]);
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} Cmd;
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static struct {
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	VtLock*	lock;
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	Cmd*	cmd;
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	int	ncmd;
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	int	hi;
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} cbox;
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enum {
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	NCmdIncr	= 20,
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};
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int
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cliError(char* fmt, ...)
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{
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	char *p;
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	va_list arg;
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	va_start(arg, fmt);
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	p = vsmprint(fmt, arg);
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	vtSetError("%s", p);
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	free(p);
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	va_end(arg);
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	return 0;
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}
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int
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cliExec(char* buf)
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{
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	int argc, i, r;
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	char *argv[20], *p;
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	p = vtStrDup(buf);
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	if((argc = tokenize(p, argv, nelem(argv)-1)) == 0){
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		vtMemFree(p);
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		return 1;
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	}
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	argv[argc] = 0;
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	if(argv[0][0] == '#'){
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		vtMemFree(p);
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		return 1;
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	}
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	vtLock(cbox.lock);
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	for(i = 0; i < cbox.hi; i++){
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		if(strcmp(cbox.cmd[i].argv0, argv[0]) == 0){
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			vtUnlock(cbox.lock);
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			if(!(r = cbox.cmd[i].cmd(argc, argv)))
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				consPrint("%s\n", vtGetError());
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			vtMemFree(p);
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			return r;
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		}
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	}
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	vtUnlock(cbox.lock);
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	consPrint("%s: - eh?\n", argv[0]);
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	vtMemFree(p);
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	return 0;
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}
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int
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cliAddCmd(char* argv0, int (*cmd)(int, char*[]))
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{
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	int i;
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	Cmd *opt;
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	vtLock(cbox.lock);
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	for(i = 0; i < cbox.hi; i++){
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		if(strcmp(argv0, cbox.cmd[i].argv0) == 0){
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			vtUnlock(cbox.lock);
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			return 0;
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		}
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	}
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	if(i >= cbox.hi){
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		if(cbox.hi >= cbox.ncmd){
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			cbox.cmd = vtMemRealloc(cbox.cmd,
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					(cbox.ncmd+NCmdIncr)*sizeof(Cmd));
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			memset(&cbox.cmd[cbox.ncmd], 0, NCmdIncr*sizeof(Cmd));
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			cbox.ncmd += NCmdIncr;
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		}
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	}
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	opt = &cbox.cmd[cbox.hi];
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	opt->argv0 = argv0;
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	opt->cmd = cmd;
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	cbox.hi++;
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	vtUnlock(cbox.lock);
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	return 1;
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}
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int
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cliInit(void)
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{
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	cbox.lock = vtLockAlloc();
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	cbox.cmd = vtMemAllocZ(NCmdIncr*sizeof(Cmd));
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	cbox.ncmd = NCmdIncr;
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	cbox.hi = 0;
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	return 1;
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}