root/libutil/fileop.c(122.html)

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DEFINITIONS

This source file includes following definitions.
  1. open_input_file
  2. open_output_file
  3. get_descripter
  4. close_file

/*
 * Copyright (c) 2006
 *      Tama Communications Corporation
 *
 * This file is part of GNU GLOBAL.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifdef HAVE_CONFIG_H #include <config.h> #endif #include <stdio.h> #ifdef STDC_HEADERS #include <stdlib.h> #endif #include "checkalloc.h" #include "die.h" #include "fileop.h" #include "makepath.h" #include "strlimcpy.h" /* File operation: usage [WRITE] int compress = cflag ? 1 : 0; FILEOP *fileop = open_output_file(path, compress); FILE *op = get_descripter(fileop); fputs("Hello", op); ... close_file(fileop); [READ] FILEOP *fileop = open_input_file(path); FILE *ip = get_descripter(fileop); fgets(buf, sizeof(buf), ip); ... close_file(fileop); */
/* * open input file. * * i) path path name * r) file descripter */
FILEOP * open_input_file(const char *path) { FILE *fp = fopen(path, "r"); FILEOP *fileop; if (fp == NULL) die("cannot open file '%s'.", path); fileop = check_calloc(sizeof(FILEOP), 1); fileop->fp = fp; strlimcpy(fileop->path, path, sizeof(fileop->path)); fileop->type = FILEOP_INPUT; return fileop; } /* * open output file * * i) path path name * i) compress 0: normal, 1: compress * r) file descripter */
FILEOP * open_output_file(const char *path, int compress) { FILEOP *fileop; FILE *fp; char command[MAXFILLEN+1]; if (compress) { snprintf(command, sizeof(command), "gzip -c >%s", path); fp = popen(command, "w"); if (fp == NULL) die("cannot create pipe."); } else { fp = fopen(path, "w"); if (fp == NULL) die("cannot create file '%s'.", path); } fileop = check_calloc(sizeof(FILEOP), 1); strlimcpy(fileop->path, path, sizeof(fileop->path)); if (compress) strlimcpy(fileop->command, command, sizeof(fileop->command)); fileop->type = FILEOP_OUTPUT; if (compress) fileop->type |= FILEOP_COMPRESS; fileop->fp = fp; return fileop; } /* * get UNIX file descripter */
FILE * get_descripter(FILEOP *fileop) { return fileop->fp; } /* * close_file: close file * * i) fileop file descripter */
void close_file(FILEOP *fileop) { if (fileop->type & FILEOP_COMPRESS) { if (pclose(fileop->fp) != 0) die("terminated abnormally. '%s'", fileop->command); } else fclose(fileop->fp); free(fileop); }

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