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/* Copyright 2001 Jeff Dike and others
* Licensed under the GPL
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include "output.h"
void write_output(int fd, struct output *output)
{
if(output == NULL) return;
if(write(fd, &output->used, sizeof(output->used)) != sizeof(output->used)){
perror("write_output : write of length failed");
exit(1);
}
if(write(fd, output->buffer, output->used) != output->used){
perror("write_output : write of data failed");
exit(1);
}
output->used = 0;
}
void add_output(struct output *output, char *new, int len)
{
int n, start;
if(output == NULL){
fprintf(stderr, "%s", new);
return;
}
if(len == -1) len = strlen(new);
n = len;
if(output->used == 0) n++;
if(output->used + n > output->total){
output->total = output->used + n;
output->total = (output->total + 4095) & ~4095;
if(output->buffer == NULL){
if((output->buffer = malloc(output->total)) == NULL){
perror("mallocing new output buffer");
*output = ((struct output) { 0, 0, NULL});
return;
}
}
else if((output->buffer = realloc(output->buffer, output->total)) == NULL){
perror("reallocing new output buffer");
*output = ((struct output) { 0, 0, NULL});
return;
}
}
if(output->used == 0) start = 0;
else start = output->used - 1;
strncpy(&output->buffer[start], new, len);
output->used += n;
output->buffer[output->used - 1] = '\0';
}
void output_errno(struct output *output, char *str)
{
if(output == NULL) perror(str);
else {
add_output(output, str, -1);
add_output(output, strerror(errno), -1);
add_output(output, "\n", -1);
}
}
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