hush/libbb/read_text_file_to_buffer.c
Glenn L McGrath 65708e4cd1 Read a FILE* till an empty line or eof and return it as a char buffer.
In future maybe add char *end_str to interface to allow calling function
to specify end point.
2001-04-15 12:36:19 +00:00

38 lines
810 B
C

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libbb.h"
/*
* Reads consecutive lines from file line that start with end_string
* read finishes at an empty line or eof
*/
extern char *read_text_file_to_buffer(FILE *src_file)
{
char *line = NULL;
char *buffer = NULL;
int buffer_length = 0;
int line_length = 0;
buffer = xmalloc(1);
strcpy(buffer, "");
/* Loop until line is empty, or just one char, which will be '\n' */
do {
line = get_line_from_file(src_file);
if (line == NULL) {
break;
}
line_length = strlen(line);
buffer_length += line_length + 1;
buffer = (char *) xrealloc(buffer, buffer_length + 1);
strcat(buffer, line);
free(line);
} while (line_length > 1);
if (strlen(buffer) == 0) {
return(NULL);
} else {
return(strdup(buffer));
}
}