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https://github.com/vim/vim.git
synced 2025-09-30 04:44:14 -04:00
patch 8.2.3554: xxd has various way to exit
Problem: Xxd has various way to exit. Solution: Add function to print error and exit. (closes #9035)
This commit is contained in:
DungSaga
Bram Moolenaar
@@ -757,6 +757,8 @@ static char *(features[]) =
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static int included_patches[] =
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{ /* Add new patch number below this line */
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/**/
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3554,
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/**/
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3553,
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/**/
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108
src/xxd/xxd.c
108
src/xxd/xxd.c
@@ -188,13 +188,6 @@ char osver[] = "";
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# endif
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#endif
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/* Let's collect some prototypes */
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/* CodeWarrior is really picky about missing prototypes */
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static void exit_with_usage __P((void));
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static void die __P((int));
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static int huntype __P((FILE *, FILE *, FILE *, int, int, long));
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static void xxdline __P((FILE *, char *, int));
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#define TRY_SEEK /* attempt to use lseek, or skip forward by reading */
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#define COLS 256 /* change here, if you ever need more columns */
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#define LLEN ((2*(int)sizeof(unsigned long)) + 4 + (9*COLS-1) + COLS + 2)
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@@ -245,13 +238,20 @@ exit_with_usage(void)
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}
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static void
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die(int ret)
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perror_exit(int ret)
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{
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fprintf(stderr, "%s: ", pname);
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perror(NULL);
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exit(ret);
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}
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static void
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error_exit(int ret, char *msg)
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{
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fprintf(stderr, "%s: %s\n", pname, msg);
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exit(ret);
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}
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/*
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* Max. cols binary characters are decoded from the input stream per line.
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* Two adjacent garbage characters after evaluated data delimit valid data.
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@@ -263,7 +263,6 @@ die(int ret)
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huntype(
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FILE *fpi,
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FILE *fpo,
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FILE *fperr,
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int cols,
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int hextype,
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long base_off)
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@@ -316,25 +315,22 @@ huntype(
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if (base_off + want_off != have_off)
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{
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if (fflush(fpo) != 0)
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die(3);
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perror_exit(3);
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#ifdef TRY_SEEK
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if (fseek(fpo, base_off + want_off - have_off, 1) >= 0)
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have_off = base_off + want_off;
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#endif
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if (base_off + want_off < have_off)
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{
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fprintf(fperr, "%s: sorry, cannot seek backwards.\n", pname);
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return 5;
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}
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error_exit(5, "sorry, cannot seek backwards.");
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for (; have_off < base_off + want_off; have_off++)
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if (putc(0, fpo) == EOF)
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die(3);
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perror_exit(3);
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}
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if (n2 >= 0 && n1 >= 0)
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{
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if (putc((n2 << 4) | n1, fpo) == EOF)
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die(3);
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perror_exit(3);
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have_off++;
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want_off++;
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n1 = -1;
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@@ -351,7 +347,7 @@ huntype(
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while (c != '\n' && c != EOF)
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c = getc(fpi);
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if (c == EOF && ferror(fpi))
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die(2);
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perror_exit(2);
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}
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if (c == '\n')
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{
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@@ -362,14 +358,14 @@ huntype(
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}
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}
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if (fflush(fpo) != 0)
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die(3);
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perror_exit(3);
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#ifdef TRY_SEEK
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fseek(fpo, 0L, 2);
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#endif
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if (fclose(fpo) != 0)
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die(3);
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perror_exit(3);
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if (fclose(fpi) != 0)
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die(2);
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perror_exit(2);
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return 0;
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}
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@@ -402,14 +398,14 @@ xxdline(FILE *fp, char *l, int nz)
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zero_seen--;
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if (zero_seen == 2)
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if (fputs(z, fp) == EOF)
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die(3);
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perror_exit(3);
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if (zero_seen > 2)
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if (fputs("*\n", fp) == EOF)
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die(3);
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perror_exit(3);
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}
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if (nz >= 0 || zero_seen > 0)
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if (fputs(l, fp) == EOF)
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die(3);
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perror_exit(3);
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if (nz)
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zero_seen = 0;
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}
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@@ -640,12 +636,7 @@ main(int argc, char *argv[])
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if (octspergrp < 1 || octspergrp > cols)
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octspergrp = cols;
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else if (hextype == HEX_LITTLEENDIAN && (octspergrp & (octspergrp-1)))
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{
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fprintf(stderr,
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"%s: number of octets per group must be a power of 2 with -e.\n",
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pname);
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exit(1);
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}
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error_exit(1, "number of octets per group must be a power of 2 with -e.");
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if (argc > 3)
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exit_with_usage();
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@@ -682,11 +673,8 @@ main(int argc, char *argv[])
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if (revert)
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{
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if (hextype && (hextype != HEX_POSTSCRIPT))
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{
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fprintf(stderr, "%s: sorry, cannot revert this type of hexdump\n", pname);
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return -1;
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}
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return huntype(fp, fpo, stderr, cols, hextype,
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error_exit(-1, "sorry, cannot revert this type of hexdump");
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return huntype(fp, fpo, cols, hextype,
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negseek ? -seekoff : seekoff);
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}
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@@ -698,10 +686,7 @@ main(int argc, char *argv[])
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else
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e = fseek(fp, negseek ? -seekoff : seekoff, negseek ? 2 : 0);
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if (e < 0 && negseek)
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{
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fprintf(stderr, "%s: sorry cannot seek.\n", pname);
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return 4;
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}
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error_exit(4, "sorry cannot seek.");
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if (e >= 0)
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seekoff = ftell(fp);
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else
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@@ -714,12 +699,11 @@ main(int argc, char *argv[])
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{
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if (ferror(fp))
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{
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die(2);
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perror_exit(2);
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}
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else
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{
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fprintf(stderr, "%s: sorry cannot seek.\n", pname);
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return 4;
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error_exit(4, "sorry cannot seek.");
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}
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}
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}
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@@ -730,12 +714,12 @@ main(int argc, char *argv[])
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if (fp != stdin)
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{
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if (fprintf(fpo, "unsigned char %s", isdigit((int)argv[1][0]) ? "__" : "") < 0)
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die(3);
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perror_exit(3);
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for (e = 0; (c = argv[1][e]) != 0; e++)
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if (putc(isalnum(c) ? CONDITIONAL_CAPITALIZE(c) : '_', fpo) == EOF)
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die(3);
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perror_exit(3);
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if (fputs("[] = {\n", fpo) == EOF)
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die(3);
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perror_exit(3);
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}
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p = 0;
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@@ -744,32 +728,32 @@ main(int argc, char *argv[])
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{
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if (fprintf(fpo, (hexx == hexxa) ? "%s0x%02x" : "%s0X%02X",
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(p % cols) ? ", " : &",\n "[2*!p], c) < 0)
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die(3);
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perror_exit(3);
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p++;
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}
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if (c == EOF && ferror(fp))
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die(2);
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perror_exit(2);
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if (p && fputs("\n", fpo) == EOF)
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die(3);
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perror_exit(3);
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if (fputs(&"};\n"[3 * (fp == stdin)], fpo) == EOF)
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die(3);
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perror_exit(3);
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if (fp != stdin)
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{
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if (fprintf(fpo, "unsigned int %s", isdigit((int)argv[1][0]) ? "__" : "") < 0)
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die(3);
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perror_exit(3);
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for (e = 0; (c = argv[1][e]) != 0; e++)
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if (putc(isalnum(c) ? CONDITIONAL_CAPITALIZE(c) : '_', fpo) == EOF)
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die(3);
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perror_exit(3);
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if (fprintf(fpo, "_%s = %d;\n", capitalize ? "LEN" : "len", p) < 0)
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die(3);
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perror_exit(3);
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}
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if (fclose(fp))
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die(2);
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perror_exit(2);
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if (fclose(fpo))
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die(3);
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perror_exit(3);
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return 0;
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}
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@@ -781,24 +765,24 @@ main(int argc, char *argv[])
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{
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if (putc(hexx[(e >> 4) & 0xf], fpo) == EOF
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|| putc(hexx[e & 0xf], fpo) == EOF)
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die(3);
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perror_exit(3);
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n++;
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if (!--p)
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{
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if (putc('\n', fpo) == EOF)
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die(3);
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perror_exit(3);
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p = cols;
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}
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}
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if (e == EOF && ferror(fp))
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die(2);
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perror_exit(2);
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if (p < cols)
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if (putc('\n', fpo) == EOF)
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die(3);
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perror_exit(3);
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if (fclose(fp))
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die(2);
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perror_exit(2);
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if (fclose(fpo))
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die(3);
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perror_exit(3);
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return 0;
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}
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@@ -863,7 +847,7 @@ main(int argc, char *argv[])
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}
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}
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if (e == EOF && ferror(fp))
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die(2);
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perror_exit(2);
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if (p)
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{
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l[c = (addrlen + 3 + (grplen * cols - 1)/octspergrp + p)] = '\n'; l[++c] = '\0';
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@@ -873,9 +857,9 @@ main(int argc, char *argv[])
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xxdline(fpo, l, -1); /* last chance to flush out suppressed lines */
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if (fclose(fp))
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die(2);
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perror_exit(2);
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if (fclose(fpo))
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die(3);
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perror_exit(3);
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return 0;
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}
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