refactor

1 files changed, 0 insertions, 238 deletions

diff --git a/src/commands/tail.c b/src/commands/tail.c
deleted file mode 100644
index 07b3d2b..0000000
--- a/src/commands/tail.c
+++ /dev/null
@@ -1,238 +0,0 @@
-#include "../command.h"
-
-static struct {
-    bool lines;
-    int count;
-    bool print_headers;
-    bool dont_print_headers;
-    bool print_as_grow;
-    int grow_wait;
-} flags;
-
-static size_t tail_file_lines(FILE* file, unsigned int count, size_t skip) {
-
-    char** ring;
-    int* ring_len;
-    int index, read;
-    unsigned int size, i;
-    size_t len;
-    char* line;
-
-    ring = malloc(sizeof(char*) * count);
-    memset(ring, 0, sizeof(char*) * count);
-
-    ring_len = malloc(sizeof(int) * count);
-    
-    index = 0;
-    size = 0;
-
-    fseek(file, skip, SEEK_SET);
-    
-    len = skip;
-    line = NULL;
-    
-    while ((read = getline(&line, &len, file)) != -1) {
-
-        if (ring[index] != NULL) free(ring[index]);
-        ring[index] = line;
-        ring_len[index] = read;
-
-        index++;
-        index %= count;
-        if (size < count) size++;
-
-        line = NULL;
-    }
-
-    index += count - size;
-    index %= count;
-   
-    for (i = 0; i < size; i++) {
-        fwrite(ring[index], ring_len[index], 1, stdout);
-        free(ring[index]);
-        index += 1;
-        index %= count;
-    }
-
-    free(line);
-    fclose(file);
-    free(ring);
-    free(ring_len);
-
-    return len;
-}
-
-static size_t tail_file_chars(FILE* file, unsigned int count, size_t skip) {
-
-    char* ring;
-    int index;
-    unsigned int size, i;
-    int read, c;
-
-    ring = malloc(sizeof(char) * count);
-    memset(ring, 0, count);
-
-    index = 0;
-    size = 0;
-
-    fseek(file, skip, SEEK_SET);
-    read = skip;
-    
-    while((c = getc(file)) != EOF) {
-        ring[index] = c;
-        index++;
-        read++;
-        index %= count;
-        if (size < count) size++;
-    }
-
-    index += count - size;
-    index %= count;
-
-    for (i = 0; i < size; i++) {
-        putchar(ring[index]);
-        index += 1;
-        index %= count;
-    }
-
-    fclose(file);
-
-    return read;
-}
-
-static void help(void) {
-    printf("Usage: tail [OPTIONS] [FILE]...\n\n");
-    printf("Print last 10 lines of FILEs (or stdin) to.\n");
-    printf("With more than one FILE, precede each with a filename header.\n\n");
-    printf("\t-c [+]N[bkm]\tPrint last N bytes\n");
-	printf("\t-n N[bkm]\tPrint last N lines\n");
-	printf("\t\t\t(b:*512 k:*1024 m:*1024^2)\n");
-	printf("\t-q\t\tNever print headers\n");
-	printf("\t-v\t\tAlways print headers\n");
-	printf("\t-f\t\tPrint data as file grows\n");
-	printf("\t-s SECONDS\tWait SECONDS between reads with -f\n");
-    exit(EXIT_SUCCESS);
-}
-
-static void print_header(char* path, bool many) {
-    if (flags.dont_print_headers) return;
-    if (!many && !flags.print_headers) return;
-    if (streql("-", path)) {
-        printf("\n==> standard input <==\n");
-    } else {
-        printf("\n=>> %s <==\n", path);
-    }
-}
-
-static void tail_file(char* path, bool many) {
-
-    FILE* file;
-    size_t skip;
-
-    file = get_file(path, "r");
-    print_header(path, many);
-    
-    skip = 0;
-    while (true) {
-        if (flags.lines) {
-            skip = tail_file_lines(file, flags.count, skip);
-        } else {
-            skip = tail_file_chars(file, flags.count, skip);
-        }
-        if (!flags.print_as_grow) break;
-        sleep(flags.grow_wait);
-        get_file(path, "r");
-    };
-}
-
-static int short_arg(char c, char* next) {
-    switch (c) {
-        case 'c': {
-            long int bkm;
-
-            flags.lines = false;
-            
-            check_arg(next);
-            bkm = get_blkm(next);
-            
-            if (bkm < 1) {
-                error("bkm cannot be less than 1");
-            }
-            
-            flags.count = bkm;
-            return ARG_USED;
-        }
-        case 'n': {
-            long int bkm;
-
-            flags.lines = true;
-            
-            check_arg(next);
-            bkm = get_blkm(next);
-            
-            if (bkm < 1) {
-                error("bkm cannot be less than 1");
-            }
-            
-            flags.count = bkm;
-            return ARG_USED;
-        }
-        case 'q':
-            flags.dont_print_headers = true;
-            break;
-        case 'v':
-            flags.print_headers = true;
-            break;
-        case 'f':
-            flags.print_as_grow = true;
-            break;
-        case 's': {
-            long int sec;
-
-            check_arg(next);
-            sec = get_number(next);
-            
-            if (sec < 1) {
-                error("wait seconds cannot be less than 1");
-            }
-            
-            flags.grow_wait = sec;
-            return ARG_USED;
-        }
-        default: 
-            return ARG_INVALID;
-    }
-    return ARG_UNUSED;
-}
-
-COMMAND(tail) {
-
-    int start, count, i;
-
-    flags.count = 10;
-    flags.dont_print_headers = false;
-    flags.print_headers = false;
-    flags.lines = true;
-    flags.print_as_grow = false;
-    flags.grow_wait = 10;
-
-    start = parse_args(argc, argv, help, short_arg, NULL);
-
-    count = argc - start;
-
-    if (count < 1) {
-        tail_file_lines(stdin, 10, 0);
-        return EXIT_SUCCESS;
-    }
-
-    if (count == 1) {
-        tail_file(argv[start], false);
-        return EXIT_SUCCESS;
-    }
-
-    for (i = 0; i < count; i++) {
-        tail_file(argv[start + i], true);
-    }
-
-    return EXIT_SUCCESS;
-}