83 lines
1.9 KiB
C++
83 lines
1.9 KiB
C++
#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include "hb-private.hh"
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#include "hb-blob.h"
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int
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main (int argc, char **argv)
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{
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int exit_code = 0;
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if (argc != 4) {
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fprintf(stderr, "Must have 4 args\n");
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exit(1);
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}
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int fd = open(argv[1], O_RDONLY);
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if (fd == -1) {
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perror("Unable to open font file");
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exit(1);
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}
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void *mapped_file = MAP_FAILED;
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int fd_out = -1;
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struct stat stat;
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if (fstat(fd, &stat) != -1) {
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mapped_file = mmap(NULL, stat.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
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if (mapped_file == MAP_FAILED) {
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perror("Failed to map file");
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}
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} else {
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perror("Unable to fstat");
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}
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if (mapped_file != MAP_FAILED) {
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hb_blob_t *font_blob = hb_blob_create(static_cast<const char*>(mapped_file),
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stat.st_size,
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HB_MEMORY_MODE_READONLY, nullptr,
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nullptr);
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fd_out = open(argv[2], O_CREAT | O_WRONLY, S_IRWXU);
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if (fd_out != -1) {
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ssize_t bytes_written = write(fd_out, mapped_file, stat.st_size);
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if (bytes_written == -1) {
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perror("Unable to write output file");
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exit_code = 1;
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} else if (bytes_written != stat.st_size) {
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fprintf(stderr, "Wrong number of bytes written");
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exit_code = 1;
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}
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} else {
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perror("Unable to open output file");
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exit_code = 1;
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}
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}
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if (mapped_file != MAP_FAILED) {
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if (munmap(mapped_file, stat.st_size) == -1) {
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perror("Unable to unmap file");
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exit_code = 1;
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}
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}
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if (fd_out != -1 && close(fd_out) == -1) {
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perror("Unable to close output file");
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exit_code = 1;
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}
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if (fd != -1 && close(fd) == -1) {
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perror("Unable to close file");
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exit_code = 1;
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}
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return exit_code;
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}
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