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aux-entries iterate

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This commit is contained in:
John Kerl 2017-03-06 22:28:37 -05:00
parent 14805eedc6
commit f4e5f337aa
1 changed files with 57 additions and 6 deletions
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63
c/lib/aux_entries.c
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@ -1,6 +1,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "lib/mlr_globals.h"
#include "lib/mlr_arch.h"
#include "lib/mlrutil.h"
@ -10,14 +11,17 @@ static int aux_list_main(int argc, char** argv);
static int lecat_main(int argc, char** argv);
static int termcvt_main(int argc, char** argv);
static int hex_main(int argc, char** argv);
static int unhex_main(int argc, char** argv);
static int lecat_stream(FILE* input_stream, int do_color);
static void hex_dump_fp(FILE *in_fp, FILE *out_fp, int do_raw);
static void unhex_fp(FILE *in_fp, FILE *out_fp);
static void aux_list_usage(char* argv0, char* argv1, FILE* o, int exit_code);
static void lecat_usage(char* argv0, char* argv1, FILE* o, int exit_code);
static void termcvt_usage(char* argv0, char* argv1, FILE* o, int exit_code);
static void hex_usage(char* argv0, char* argv1, FILE* o, int exit_code);
static void unhex_usage(char* argv0, char* argv1, FILE* o, int exit_code);
// ----------------------------------------------------------------
typedef int aux_main_t(int argc, char**argv);
@ -34,6 +38,7 @@ static aux_lookup_entry_t aux_lookup_table[] = {
{ "lecat", lecat_main, lecat_usage },
{ "termcvt", termcvt_main, termcvt_usage },
{ "hex", hex_main, hex_usage },
{ "unhex", unhex_main, unhex_usage },
};
@ -325,11 +330,6 @@ static int termcvt_main(int argc, char** argv) {
// 00000070: 70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f |pqrstuvwxyz{|}~.|
// ================================================================
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <fcntl.h>
#define LINE_LENGTH_MAX 8192
// ----------------------------------------------------------------
@ -398,7 +398,7 @@ static int hex_main(int argc, char **argv) {
return 0;
}
//----------------------------------------------------------------------
// ----------------------------------------------------------------
static void hex_dump_fp(FILE *in_fp, FILE *out_fp, int do_raw) {
const int bytes_per_clump = 4;
const int clumps_per_line = 4;
@ -451,3 +451,54 @@ static void hex_dump_fp(FILE *in_fp, FILE *out_fp, int do_raw) {
num_bytes_total += num_bytes_read;
}
}
// ----------------------------------------------------------------
static void unhex_usage(char* argv0, char* argv1, FILE* o, int exit_code) {
fprintf(o, "Usage: %s %s [option] {zero or more file names}\n", argv0, argv1);
fprintf(o, "Options:\n");
fprintf(o, "-h or --help: print this message\n");
fprintf(o, "Zero file names means read from standard input.\n");
fprintf(o, "Output is always to standard output; files are not written in-place.\n");
exit(exit_code);
}
// ----------------------------------------------------------------
int unhex_main(int argc, char ** argv) {
// 'mlr' and 'unhex' are already argv[0] and argv[1].
if (argc >= 3) {
if (streq(argv[2], "-h") || streq(argv[2], "--help")) {
unhex_usage(argv[0], argv[1], stdout, 0);
}
}
int exit_code = 0;
if (argc == 2) {
unhex_fp(stdin, stdout);
} else {
for (int argi = 2; argi < argc; argi++) {
char* filename = argv[argi];
FILE* infp = fopen(filename, "rb");
if (infp == NULL) {
fprintf(stderr, "%s %s: Couldn't open \"%s\"; skipping.\n",
argv[0], argv[1], filename);
exit_code = 1;
} else {
unhex_fp(infp, stdout);
fclose(infp);
}
}
}
return 0;
}
// ----------------------------------------------------------------
static void unhex_fp(FILE *infp, FILE *outfp) {
unsigned char byte;
unsigned temp;
int count;
while ((count=fscanf(infp, "%x", &temp)) > 0) {
byte = temp;
fwrite (&byte, sizeof(byte), 1, outfp);
}
}