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