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31 May 2024, 23:06:24 UTC
Revision 73c838e4c9437a0c41082c32a3a832aa385460a9 authored by Junio C Hamano on 08 January 2007, 10:08:47 UTC, committed by Junio C Hamano on 08 January 2007, 11:02:11 UTC 
git-checkout: rewording comments regarding detached HEAD.
 
We used to say "you are not on a branch" before the initial
commit.  This is incorrect -- the user is on a branch yet to be
born, but its name has been already determined.

Signed-off-by: Junio C Hamano <junkio@cox.net>
1 parent 6488610
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Tip revision: 73c838e4c9437a0c41082c32a3a832aa385460a9 authored by Junio C Hamano on 08 January 2007, 10:08:47 UTC
git-checkout: rewording comments regarding detached HEAD.
Tip revision: 73c838e
builtin-stripspace.c 
#include "builtin.h"

/*
 * Remove empty lines from the beginning and end.
 *
 * Turn multiple consecutive empty lines into just one
 * empty line.  Return true if it is an incomplete line.
 */
static int cleanup(char *line)
{
	int len = strlen(line);

	if (len && line[len-1] == '\n') {
		if (len == 1)
			return 0;
		do {
			unsigned char c = line[len-2];
			if (!isspace(c))
				break;
			line[len-2] = '\n';
			len--;
			line[len] = 0;
		} while (len > 1);
		return 0;
	}
	return 1;
}

void stripspace(FILE *in, FILE *out)
{
	int empties = -1;
	int incomplete = 0;
	char line[1024];

	while (fgets(line, sizeof(line), in)) {
		incomplete = cleanup(line);

		/* Not just an empty line? */
		if (line[0] != '\n') {
			if (empties > 0)
				fputc('\n', out);
			empties = 0;
			fputs(line, out);
			continue;
		}
		if (empties < 0)
			continue;
		empties++;
	}
	if (incomplete)
		fputc('\n', out);
}

int cmd_stripspace(int argc, const char **argv, const char *prefix)
{
	stripspace(stdin, stdout);
	return 0;
}
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