diff options
Diffstat (limited to 'core/more.c')
| -rw-r--r-- | core/more.c | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/core/more.c b/core/more.c deleted file mode 100644 index 2db41c4..0000000 --- a/core/more.c +++ /dev/null @@ -1,121 +0,0 @@ -/* more - display files in a page-by-page basis. - * Copyright (C) 2022 Ferass EL HAFIDI - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holder nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include <unistd.h> -#include <stdio.h> -#include <errno.h> -#include <stdlib.h> -#include <string.h> -#include <termios.h> -#include <sys/ioctl.h> -#include "version.h" - -#ifndef COMPILETIME -#define COMPILETIME -#endif - -int getopt(int argc, char *const argv[], const char *optstring); -void printUsage(); - -int main(int argc, char *const argv[]) { - int i = 0, argument, success, read_file; - long int columns, lines; - char buffer[4096], cmd; - struct winsize w; - FILE *file; - struct termios oldattr, newattr; - ioctl(STDOUT_FILENO, TIOCGWINSZ, &w); - if (getenv("LINES")) lines = strtol(getenv("LINES"), NULL, 10) - 1; - else lines = w.ws_row - 1; - if (getenv("COLUMNS")) columns = strtol(getenv("COLUMNS"), NULL, 10); - else columns = w.ws_col - 1; - - while ((argument = getopt(argc, argv, "")) != -1) { - if (argument == '?') { - printUsage(); - return 1; - } - } - if (argc != 2) { - printUsage(); return 1; - } - file = fopen(argv[1], "r"); - if (errno) return errno; - success = 0; - while (!success) { - if (!read_file) read_file = 1; /* 1 => read on a page-by-page basis - * 0 => don't read at all - * 2 => read on a line-by-line basis - */ - for (i = 0; i < lines && read_file != 0; i++) { - if (fgets(buffer, 4096, file) != NULL) { - printf("%s", buffer); - } - else if (errno) return errno; - else { - success = 1; - break; - } /* EOF, end while and for loop */ - if (read_file == 2) { - break; - } - } - read_file = 0; - - /* Get a character */ - tcgetattr(0, &oldattr); /* Get previous terminal parameters */ - newattr = oldattr; - newattr.c_lflag &= ~( ICANON | ECHO ); /* Disable ECHO and ICANON */ - tcsetattr( 0, TCSANOW, &newattr); /* Set net parameters */ - cmd = getchar(); - tcsetattr(0, TCSANOW, &oldattr); /* Restore old parameters */ - - if (errno) return errno; - switch (cmd) { - case 'q': - return 0; - case 'h': - printUsage(); - read_file = 0; - break; - case ' ': - read_file = 1; /* page-by-page */ - break; - default: - read_file = 2; /* line-by-line */ - break; - } - } - return 0; -} - -void printUsage() { - printf("Ferass' Base System. (%s)\n\n" - "Usage: more file ...\n\n" - "Display a file on a page-by-page basis.\n\n", COMPILETIME); -} |