Show reason when cannot open a file, and some stuffs #3
1 changed files with 37 additions and 24 deletions
53
hex2hcd.c
53
hex2hcd.c
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@ -19,16 +19,14 @@
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#define RBUF_SIZE 640
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static unsigned int asc_to_int(char a)
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{
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if (a >= 'A')
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return (a - 'A') + 10;
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else
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return a - '0';
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return a >= 'A' ? (a - 'A') + 10 : a - '0';
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}
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static unsigned int hex_to_int(const char *h)
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@ -60,25 +58,43 @@ static int check_hex_line(const char *str, int len)
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return 1;
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}
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static FILE *open_file(const char *fileName, const char *mode)
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{
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FILE *f = fopen(fileName, mode);
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if (f == NULL) {
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printf("The file '%s' could not be opened with the following reason\n", fileName);
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printf("%s\n", strerror(errno));
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exit(-EIO);
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}
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return f;
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}
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int main(int argc, char *argv[])
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{
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unsigned int addr = 0;
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char *ifn, *ofn;
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FILE *ifp, *ofp;
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char *rbuf;
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ssize_t len, i;
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size_t buflen;
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if (argc != 3) {
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printf("Usage: %s <input hex file> <output file>\n", argv[0]);
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switch (argc) {
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case 2:
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ifn = ofn = argv[1];
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break;
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case 3:
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ifn = argv[1];
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ofn = argv[2];
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break;
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default:
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printf("Usage: %s <input hex file> [<output file>]\n", argv[0]);
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return 0;
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}
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ifp = fopen(argv[1], "r");
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ofp = fopen(argv[2], "w");
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if ((ifp == NULL) || (ofp == NULL)) {
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puts("failed to open file.");
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return -EIO;
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}
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ifp = open_file(ifn, "r");
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ofp = open_file(ofn, "w");
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rbuf = NULL;
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while ((len = getline(&rbuf, &buflen, ifp)) > 0) {
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@ -94,7 +110,7 @@ int main(int argc, char *argv[])
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switch (type) {
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case 4:
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addr = lhex_to_int(rbuf + 9) * 0x10000;
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printf("bump addr to 0x%08X\n", addr);
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printf("Bump addr to 0x%08X\n", addr);
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break;
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case 0:
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dest_addr = addr + lhex_to_int(rbuf + 3);
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@ -109,27 +125,24 @@ int main(int argc, char *argv[])
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goto output_err;
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for (i = 0; i < hex_to_int(rbuf + 1); i++) {
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obuf[0] = hex_to_int(rbuf + 9 + i * 2);
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if (fwrite(obuf, 1, 1, ofp) != 1)
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goto output_err;
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if (fwrite(obuf, 1, 1, ofp) != 1) goto output_err;
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}
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break;
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case 1:
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if (fwrite("\x4e\xfc\x04\xff\xff\xff\xff", 7, 1, ofp) != 1)
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goto output_err;
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if (fwrite("\x4e\xfc\x04\xff\xff\xff\xff", 7, 1, ofp) != 1) goto output_err;
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goto end;
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default:
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return -EINVAL;
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}
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}
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puts("hex file formatting error");
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puts("Hex file formatting error");
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return -EINVAL;
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output_err:
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puts("error on writing output file");
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puts("Error on writing output file");
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return -EIO;
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end:
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return 0;
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}
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