116 lines
2.9 KiB
C
116 lines
2.9 KiB
C
#include "diff_output.h"
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#include <stdarg.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 "compat.h"
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static void
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ensure_header(diff_output_t *output) {
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if (output->archive_names[0] != NULL) {
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printf("--- %s\n", output->archive_names[0]);
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printf("+++ %s\n", output->archive_names[1]);
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output->archive_names[0] = NULL;
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output->archive_names[1] = NULL;
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}
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}
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void
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diff_output_init(diff_output_t *output, int verbose, char *const archive_names[]) {
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output->archive_names[0] = archive_names[0];
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output->archive_names[1] = archive_names[1];
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output->verbose = verbose;
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output->file_name = NULL;
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output->file_size = 0;
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output->file_crc = 0;
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output->file_mtime = 0;
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}
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void
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diff_output_start_file(diff_output_t *output, const char *name, zip_uint64_t size, zip_uint32_t crc, zip_uint64_t mtime) {
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output->file_name = name;
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output->file_size = size;
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output->file_crc = crc;
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output->file_mtime = mtime;
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}
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void
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diff_output_end_file(diff_output_t *output) {
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output->file_name = NULL;
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}
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void
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diff_output(diff_output_t *output, int side, const char *fmt, ...) {
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va_list ap;
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if (!output->verbose) {
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return;
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}
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ensure_header(output);
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if (output->file_name != NULL) {
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diff_output_file(output, ' ', output->file_name, output->file_size, output->file_crc, output->file_mtime);
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output->file_name = NULL;
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}
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printf("%c ", side);
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va_start(ap, fmt);
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vprintf(fmt, ap);
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va_end(ap);
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printf("\n");
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}
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void
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diff_output_file(diff_output_t *output, char side, const char *name, zip_uint64_t size, zip_uint32_t crc, zip_uint64_t mtime) {
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if (!output->verbose) {
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return;
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}
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ensure_header(output);
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if (size == 0 && crc == 0 && name[0] != '\0' && name[strlen(name) - 1] == '/') {
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printf("%c directory '%s'\n", side, name);
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}
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else {
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printf("%c file '%s', size %" PRIu64 ", crc %08x, mtime %" PRIu64 "\n", side, name, size, crc, mtime);
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}
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}
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#define MAX_BYTES 64
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void
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diff_output_data(diff_output_t *output, int side, const zip_uint8_t *data, zip_uint64_t data_length, const char *fmt, ...) {
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char prefix[1024];
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char hexdata[MAX_BYTES * 3 + 6];
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size_t i, offset;
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va_list ap;
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if (!output->verbose) {
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return;
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}
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offset = 0;
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for (i = 0; i < data_length; i++) {
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hexdata[offset++] = (i == 0 ? '<' : ' ');
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if (i >= MAX_BYTES) {
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snprintf(hexdata + offset, sizeof(hexdata) - offset, "...");
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break;
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}
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snprintf(hexdata + offset, sizeof(hexdata) - offset, "%02x", data[i]);
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offset += 2;
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}
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hexdata[offset++] = '>';
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hexdata[offset] = '\0';
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va_start(ap, fmt);
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vsnprintf(prefix, sizeof(prefix), fmt, ap);
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va_end(ap);
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prefix[sizeof(prefix) - 1] = '\0';
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diff_output(output, side, "%s, length %" PRIu64 ", data %s", prefix, data_length, hexdata);
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}
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