96 lines
2.1 KiB
C
96 lines
2.1 KiB
C
#include <libgen.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "file.h"
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#include "util.h"
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#define INVERT_T "\x1b[7m"
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#define UINVERT_T "\x1b[27m"
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#define GREY "\x1b[90m"
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#define RESET "\x1b[0m"
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int color = 1;
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void run(FILE *fp, char *filename, int tty) {
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const char *invert_t = color ? INVERT_T : "";
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const char *uinvert_t = color ? UINVERT_T : "";
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const char *grey = color ? GREY : "";
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const char *reset = color ? RESET : "";
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struct filedata f;
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f = readfile(fp);
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if (tty) {
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char *addon = f.binary ? " <binary>" : "";
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fprintf(stderr, "\r%s%s%s%s\r\n", invert_t, basename(filename), addon,
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uinvert_t);
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}
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int lcpad = intlen(f.lc);
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f.lc = 0;
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char pc = '\0';
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char c;
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for (size_t i = 0; i < f.len; i++) {
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c = f.buf[i];
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if (tty && !f.binary && (pc == '\n' || i == 0)) {
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f.lc++;
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int padlen = lcpad - intlen(f.lc);
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char padding[padlen];
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if (padlen)
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memset(padding, ' ', padlen);
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fprintf(stderr, "\r%s%s%d:%s ", grey, padlen > 0 ? padding : "", f.lc,
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reset); // padlen < 1 causes undefined
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}
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pc = c;
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printf("%c", c);
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}
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fflush(stdout); // prevent timing inconsistencies between stdout and stderr
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if (tty) {
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float rounded;
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char *format = formatbytes(f.len, &rounded);
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char *cnewline = c == '\n' ? "" : "\n";
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fprintf(stderr, "\r%s%s%.2f %s%s\r\n", cnewline, invert_t, rounded, format,
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uinvert_t);
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}
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}
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int main(int argc, char *argv[]) {
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char *no_color = getenv("NO_COLOR");
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if (no_color != NULL && no_color[0] != '\0') {
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color = 0;
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}
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if (argc > 1) {
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for (int i = 1; i < argc; i++) { // start at one to offset argv[0]
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FILE *fp = fopen(argv[i], "rb");
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if (fp == NULL)
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die(argv[i]);
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int tty = isatty(STDOUT_FILENO);
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run(fp, argv[i], tty);
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fclose(fp);
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if (i + 1 != argc) {
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fprintf(stderr, "\r\n"); // separate concurrent files
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}
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}
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} else {
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run(stdin, "stdin", 1); // for piped-input or repl-like behavior
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}
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return 0;
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}
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