comparison contrib/chg/hgclient.c @ 28356:a5c773acb018

chg: implement validate in hgclient

This patch implements the corresponding validate method in hgclient.
It will return instruction strings as is without taking any real action.

28355:897a4bbd578b

	CAP_ATTACHIO = 0x0100,
	CAP_CHDIR = 0x0200,
	CAP_GETPAGER = 0x0400,
	CAP_SETENV = 0x0800,
	CAP_SETUMASK = 0x1000,
};

typedef struct {
	const char *name;
	unsigned int flag;

	{"attachio", CAP_ATTACHIO},
	{"chdir", CAP_CHDIR},
	{"getpager", CAP_GETPAGER},
	{"setenv", CAP_SETENV},
	{"setumask", CAP_SETUMASK},
	{NULL, 0},  /* terminator */
};

typedef struct {
	char ch;

	assert(hgc);
	return hgc->pid;
}

/*!
 * Execute the specified Mercurial command
 *
 * @return result code
 */
int hgc_runcommand(hgclient_t *hgc, const char *const args[], size_t argsize)

28356:a5c773acb018

	CAP_ATTACHIO = 0x0100,
	CAP_CHDIR = 0x0200,
	CAP_GETPAGER = 0x0400,
	CAP_SETENV = 0x0800,
	CAP_SETUMASK = 0x1000,
	CAP_VALIDATE = 0x2000,
};

typedef struct {
	const char *name;
	unsigned int flag;

	{"attachio", CAP_ATTACHIO},
	{"chdir", CAP_CHDIR},
	{"getpager", CAP_GETPAGER},
	{"setenv", CAP_SETENV},
	{"setumask", CAP_SETUMASK},
	{"validate", CAP_VALIDATE},
	{NULL, 0},  /* terminator */
};

typedef struct {
	char ch;

	assert(hgc);
	return hgc->pid;
}

/*!
 * Send command line arguments to let the server load the repo config and check
 * whether it can process our request directly or not.
 * Make sure hgc_setenv is called before calling this.
 *
 * @return - NULL, the server believes it can handle our request, or does not
 *           support "validate" command.
 *         - a list of strings, the server cannot handle our request and it
 *           sent instructions telling us how to fix the issue. See
 *           chgserver.py for possible instruction formats.
 *           the list should be freed by the caller.
 *           the last string is guaranteed to be NULL.
 */
const char **hgc_validate(hgclient_t *hgc, const char *const args[],
			  size_t argsize)
{
	assert(hgc);
	if (!(hgc->capflags & CAP_VALIDATE))
		return NULL;

	packcmdargs(&hgc->ctx, args, argsize);
	writeblockrequest(hgc, "validate");
	handleresponse(hgc);

	/* the server returns '\0' if it can handle our request */
	if (hgc->ctx.datasize <= 1)
		return NULL;

	/* make sure the buffer is '\0' terminated */
	enlargecontext(&hgc->ctx, hgc->ctx.datasize + 1);
	hgc->ctx.data[hgc->ctx.datasize] = '\0';
	return unpackcmdargsnul(&hgc->ctx);
}

/*!
 * Execute the specified Mercurial command
 *
 * @return result code
 */
int hgc_runcommand(hgclient_t *hgc, const char *const args[], size_t argsize)