gclib/fileutils.c
author ali <ali@juiblex.co.uk>
Tue Jan 24 23:54:05 2012 +0000 (2012-01-24)
changeset 0 c2f4c0285180
permissions -rw-r--r--
Initial version
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#include <stdlib.h>
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#include <stdio.h>
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#include <gclib/macros.h>
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#include <gclib/mem.h>
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#include <gclib/fileutils.h>
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#include <gclib/gcstring.h>
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/*
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 * Read a file into memory (which should be freed with mem_free when no
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 * longer required). Returns FALSE on error and outputs a suitable error
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 * message to stderr.
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 */
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boolean file_get_contents(const char *filename,char **contents,size_t *length)
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{
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    FILE *fp;
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    size_t n;
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    char *buffer;
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    String *string;
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    fp=fopen(filename,"rb");
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    if (!fp)
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    {
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	perror(filename);
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	return FALSE;
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    }
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    buffer=mem_new(char,1024);
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    string=string_new(NULL);
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    do
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    {
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	n=fread(buffer,1,1024,fp);
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	if (n<0)
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	{
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	    perror(filename);
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	    string_free(string,TRUE);
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	    mem_free(buffer);
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	    free(fp);
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	    return FALSE;
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	}
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	string_append_len(string,buffer,n);
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    } while(n);
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    mem_free(buffer);
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    if (length)
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	*length=string->len;
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    *contents=string_free(string,FALSE);
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    fclose(fp);
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    return TRUE;
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}