feat: implemented getopt_long
This commit is contained in:
parent
c1c2feb549
commit
7d21448432
465
hw2/src/par.c
465
hw2/src/par.c
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@ -7,7 +7,6 @@
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/* This is ANSI C code. */
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#include "errmsg.h"
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#include "buffer.h" /* Also includes <stddef.h>. */
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#include "reformat.h"
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@ -16,38 +15,35 @@
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#include <string.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <getopt.h>
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#undef NULL
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#define NULL ((void *)0)
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const char *const progname = "par";
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const char *const version = "3.20";
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static int digtoint(char c)
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/* Returns the value represented by the digit c, */
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/* or -1 if c is not a digit. Does not use errmsg. */
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{
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return c == '0' ? 0 :
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c == '1' ? 1 :
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c == '2' ? 2 :
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c == '3' ? 3 :
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c == '4' ? 4 :
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c == '5' ? 5 :
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c == '6' ? 6 :
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c == '7' ? 7 :
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c == '8' ? 8 :
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c == '9' ? 9 :
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-1;
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return c == '0' ? 0 : c == '1' ? 1
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: c == '2' ? 2
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: c == '3' ? 3
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: c == '4' ? 4
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: c == '5' ? 5
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: c == '6' ? 6
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: c == '7' ? 7
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: c == '8' ? 8
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: c == '9' ? 9
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: -1;
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/* We can't simply return c - '0' because this is ANSI */
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/* C code, so it has to work for any character set, not */
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/* just ones which put the digits together in order. */
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}
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static int strtoudec(const char *s, int *pn)
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/* Puts the decimal value of the string s into *pn, returning */
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@ -57,10 +53,13 @@ static int strtoudec(const char *s, int *pn)
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{
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int n = 0;
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if (!*s) return 0;
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if (!*s)
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return 0;
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do {
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if (n >= 1000 || !isdigit(*s)) return 0;
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do
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{
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if (n >= 1000 || !isdigit(*s))
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return 0;
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n = 10 * n + digtoint(*s);
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} while (*++s);
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@ -69,11 +68,9 @@ static int strtoudec(const char *s, int *pn)
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return 1;
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}
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static void parseopt(
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const char *opt, int *pwidth, int *pprefix,
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int *psuffix, int *phang, int *plast, int *pmin
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)
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int *psuffix, int *phang, int *plast, int *pmin)
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/* Parses the single option in opt, setting *pwidth, *pprefix, */
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/* *psuffix, *phang, *plast, or *pmin as appropriate. Uses errmsg. */
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{
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@ -84,9 +81,11 @@ static void parseopt(
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char *buf;
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size_t len;
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if (*opt == '-') ++opt;
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if (*opt == '-')
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++opt;
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if (!strcmp(opt, "version")) {
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if (!strcmp(opt, "version"))
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{
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stream = open_memstream(&buf, &len);
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fprintf(stream, "%s %s\n", progname, version);
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fflush(stream);
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@ -98,29 +97,46 @@ static void parseopt(
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oc = *opt;
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if (isdigit(oc)) {
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if (!strtoudec(opt, &n)) goto badopt;
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if (n <= 8) *pprefix = n;
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else *pwidth = n;
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if (isdigit(oc))
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{
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if (!strtoudec(opt, &n))
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goto badopt;
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if (n <= 8)
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*pprefix = n;
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else
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*pwidth = n;
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}
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else {
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if (!oc) goto badopt;
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else
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{
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if (!oc)
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goto badopt;
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n = 1;
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r = strtoudec(opt + 1, &n);
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if (opt[1] && !r) goto badopt;
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if (opt[1] && !r)
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goto badopt;
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if (oc == 'w' || oc == 'p' || oc == 's') {
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if (!r) goto badopt;
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if (oc == 'w') *pwidth = n;
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else if (oc == 'p') *pprefix = n;
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else *psuffix = n;
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if (oc == 'w' || oc == 'p' || oc == 's')
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{
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if (!r)
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goto badopt;
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if (oc == 'w')
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*pwidth = n;
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else if (oc == 'p')
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*pprefix = n;
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else
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*psuffix = n;
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}
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else if (oc == 'h') *phang = n;
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else if (n <= 1) {
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if (oc == 'l') *plast = n;
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else if (oc == 'm') *pmin = n;
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else if (oc == 'h')
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*phang = n;
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else if (n <= 1)
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{
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if (oc == 'l')
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*plast = n;
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else if (oc == 'm')
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*pmin = n;
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}
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else goto badopt;
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else
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goto badopt;
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}
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clear_error();
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@ -135,7 +151,6 @@ badopt:
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free(buf);
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}
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static char **readlines(void)
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/* Reads lines from stdin until EOF, or until a blank line is encountered, */
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@ -148,56 +163,78 @@ static char **readlines(void)
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char ch, *ln, *nullline = NULL, nullchar = '\0', **lines = NULL;
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cbuf = newbuffer(sizeof(char));
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if (is_error()) goto rlcleanup;
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if (is_error())
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goto rlcleanup;
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pbuf = newbuffer(sizeof(char *));
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if (is_error()) goto rlcleanup;
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if (is_error())
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goto rlcleanup;
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for (blank = 1; ; ) {
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for (blank = 1;;)
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{
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c = getchar();
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if (c == EOF) break;
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if (c == '\n') {
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if (blank) {
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if (c == EOF)
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break;
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if (c == '\n')
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{
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if (blank)
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{
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ungetc(c, stdin);
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break;
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}
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additem(cbuf, &nullchar);
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if (is_error()) goto rlcleanup;
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if (is_error())
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goto rlcleanup;
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ln = copyitems(cbuf);
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if (is_error()) goto rlcleanup;
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if (is_error())
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goto rlcleanup;
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additem(pbuf, &ln);
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if (is_error()) goto rlcleanup;
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if (is_error())
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goto rlcleanup;
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clearbuffer(cbuf);
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blank = 1;
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}
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else {
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if (!isspace(c)) blank = 0;
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else
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{
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if (!isspace(c))
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blank = 0;
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ch = c;
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additem(cbuf, &ch);
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if (is_error()) goto rlcleanup;
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if (is_error())
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goto rlcleanup;
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}
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}
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if (!blank) {
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if (!blank)
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{
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additem(cbuf, &nullchar);
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if (is_error()) goto rlcleanup;
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if (is_error())
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goto rlcleanup;
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ln = copyitems(cbuf);
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if (is_error()) goto rlcleanup;
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if (is_error())
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goto rlcleanup;
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additem(pbuf, &ln);
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if (is_error()) goto rlcleanup;
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if (is_error())
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goto rlcleanup;
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}
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additem(pbuf, &nullline);
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if (is_error()) goto rlcleanup;
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if (is_error())
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goto rlcleanup;
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lines = copyitems(pbuf);
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rlcleanup:
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if (cbuf) freebuffer(cbuf);
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if (pbuf) {
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if (!lines) {
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for (;;) {
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if (cbuf)
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freebuffer(cbuf);
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if (pbuf)
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{
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if (!lines)
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{
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for (;;)
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{
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lines = nextitem(pbuf);
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if (!lines) break;
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if (!lines)
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break;
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free(*lines);
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}
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}
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@ -207,11 +244,9 @@ rlcleanup:
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return lines;
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}
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static void setdefaults(
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const char *const *inlines, int *pwidth, int *pprefix,
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int *psuffix, int *phang, int *plast, int *pmin
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)
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int *psuffix, int *phang, int *plast, int *pmin)
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/* If any of *pwidth, *pprefix, *psuffix, *phang, *plast, *pmin are */
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/* less than 0, sets them to default values based on inlines, according */
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/* to "par.doc". Does not use errmsg because it always succeeds. */
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@ -219,23 +254,32 @@ static void setdefaults(
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int numlines;
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const char *start, *end, *const *line, *p1, *p2;
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if (*pwidth < 0) *pwidth = 72;
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if (*phang < 0) *phang = 0;
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if (*plast < 0) *plast = 0;
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if (*pmin < 0) *pmin = *plast;
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if (*pwidth < 0)
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*pwidth = 72;
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if (*phang < 0)
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*phang = 0;
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if (*plast < 0)
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*plast = 0;
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if (*pmin < 0)
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*pmin = *plast;
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for (line = inlines; *line; ++line);
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for (line = inlines; *line; ++line)
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;
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numlines = line - inlines;
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if (*pprefix < 0)
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{
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if (numlines <= *phang + 1)
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*pprefix = 0;
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else {
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else
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{
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start = inlines[*phang];
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for (end = start; *end; ++end);
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for (line = inlines + *phang + 1; *line; ++line) {
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for (p1 = start, p2 = *line; p1 < end && *p1 == *p2; ++p1, ++p2);
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for (end = start; *end; ++end)
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;
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for (line = inlines + *phang + 1; *line; ++line)
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{
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for (p1 = start, p2 = *line; p1 < end && *p1 == *p2; ++p1, ++p2)
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;
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end = p1;
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}
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*pprefix = end - start;
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@ -246,23 +290,28 @@ static void setdefaults(
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{
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if (numlines <= 1)
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*psuffix = 0;
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else {
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else
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{
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start = *inlines;
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for (end = start; *end; ++end);
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for (line = inlines + 1; *line; ++line) {
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for (p2 = *line; *p2; ++p2);
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for (end = start; *end; ++end)
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;
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for (line = inlines + 1; *line; ++line)
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{
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for (p2 = *line; *p2; ++p2)
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;
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for (p1 = end;
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p1 > start && p2 > *line && p1[-1] == p2[-1];
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--p1, --p2);
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--p1, --p2)
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;
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start = p1;
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}
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while (end - start >= 2 && isspace(*start) && isspace(start[1])) ++start;
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while (end - start >= 2 && isspace(*start) && isspace(start[1]))
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++start;
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*psuffix = end - start;
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}
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}
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}
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static void freelines(char **lines)
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/* Frees the strings pointed to in the NULL-terminated array lines, then */
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/* frees the array. Does not use errmsg because it always succeeds. */
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@ -275,65 +324,261 @@ static void freelines(char **lines)
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free(lines);
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}
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static int setValue(int *val, char *arg, char *name)
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{
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FILE *stream;
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char *buf;
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size_t len;
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if (!arg)
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{
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stream = open_memstream(&buf, &len);
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fprintf(stream, "Require value for argument %s", name);
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fflush(stream);
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set_error(buf);
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fclose(stream);
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free(buf);
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}
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// if (*val != -1)
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// {
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// stream = open_memstream(&buf, &len);
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// fprintf(stream, "Multiple input for argument %s", name);
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// fflush(stream);
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// set_error(buf);
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// fclose(stream);
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// free(buf);
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// return 0;
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// }
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if (!strtoudec(arg, val))
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{
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stream = open_memstream(&buf, &len);
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fprintf(stream, "Invalid Input %s\n", arg);
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fflush(stream);
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set_error(buf);
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fclose(stream);
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free(buf);
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return 0;
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}
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return 1;
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}
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static int setOptions(int argc, char **argv, int *widthbak, int *prefixbak, int *suffixbak, int * hangbak, int *lastbak, int *minbak)
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{
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FILE *stream;
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char *buf;
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size_t len;
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int option_index = 0;
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static struct option long_options[] = {
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{"version", no_argument, 0, 'v'},
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{"width", required_argument, 0, 'w'},
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{"prefix", required_argument, 0, 'p'},
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{"suffix", required_argument, 0, 's'},
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{"hang", optional_argument, 0, 'h'},
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{"last", no_argument, 0, 'L'},
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{"no-last", no_argument, 0, 'n'},
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{"min", no_argument, 0, 'M'},
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{"no-min", no_argument, 0, 'N'},
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{0, 0, 0, 0}};
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for (char ch = getopt_long(argc, argv, "w:p:s:h::l:m:", long_options, &option_index); ch != -1; ch = getopt_long(argc, argv, "w:p:s:h::l:m:", long_options, &option_index))
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{
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switch (ch)
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{
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case 'v':
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stream = open_memstream(&buf, &len);
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fprintf(stream, "%s %s\n", progname, version);
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fflush(stream);
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set_error(buf);
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fclose(stream);
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free(buf);
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return 0;
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break;
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case 'W':
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if (!setValue(widthbak, optarg, "width"))
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return 0;
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break;
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case 'w':
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if (!setValue(widthbak, optarg, "width"))
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return 0;
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break;
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case 'p':
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if (!setValue(prefixbak, optarg, "prefix"))
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return 0;
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break;
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case 's':
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if (!setValue(suffixbak, optarg, "suffix"))
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return 0;
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break;
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case 'h':
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if (!optarg)
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{
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optarg = "1";
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}
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if (!setValue(hangbak, optarg, "hang"))
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return 0;
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break;
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case 'l':
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if (!setValue(lastbak, optarg, "last"))
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return 0;
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if (*lastbak != 0 && *lastbak != 1)
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{
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stream = open_memstream(&buf, &len);
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fprintf(stream, "Value for -l must be 0 or 1");
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fflush(stream);
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set_error(buf);
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fclose(stream);
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free(buf);
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return 0;
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}
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break;
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case 'm':
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if (!setValue(minbak, optarg, "last"))
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return 0;
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if (*minbak != 0 && *minbak != 1)
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{
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stream = open_memstream(&buf, &len);
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fprintf(stream, "Value for -m must be 0 or 1");
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fflush(stream);
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set_error(buf);
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fclose(stream);
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free(buf);
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return 0;
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}
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break;
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case 'L':
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if (!setValue(lastbak, "1", "last"))
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return 0;
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break;
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case 'n':
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if (!setValue(lastbak, "0", "last"))
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return 0;
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break;
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case 'M':
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if (!setValue(minbak, "1", "min"))
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return 0;
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break;
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case 'N':
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if (!setValue(minbak, "0", "last"))
|
||||
return 0;
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
int original_main(int argc, const char *const *argv)
|
||||
{
|
||||
int width, widthbak = -1, prefix, prefixbak = -1, suffix, suffixbak = -1,
|
||||
hang, hangbak = -1, last, lastbak = -1, min, minbak = -1, c;
|
||||
hang, hangbak = -1, last, lastbak = -1, min, minbak = -1, c, argc_env;
|
||||
char *parinit, *picopy = NULL, *opt, **inlines = NULL, **outlines = NULL,
|
||||
**line;
|
||||
**line, **argv_env, *tmp;
|
||||
const char *const whitechars = " \f\n\r\t\v";
|
||||
|
||||
// parinit = getenv("PARINIT");
|
||||
// if (parinit) {
|
||||
// picopy = malloc((strlen(parinit) + 1) * sizeof (char));
|
||||
// if (!picopy) {
|
||||
// set_error(outofmem);
|
||||
// goto parcleanup;
|
||||
// }
|
||||
// strcpy(picopy,parinit);
|
||||
// opt = strtok(picopy,whitechars);
|
||||
// while (opt) {
|
||||
// parseopt(opt, &widthbak, &prefixbak,
|
||||
// &suffixbak, &hangbak, &lastbak, &minbak);
|
||||
// if (is_error()) goto parcleanup;
|
||||
// opt = strtok(NULL,whitechars);
|
||||
// }
|
||||
// free(picopy);
|
||||
// picopy = NULL;
|
||||
// }
|
||||
|
||||
// while (*++argv) {
|
||||
// parseopt(*argv, &widthbak, &prefixbak,
|
||||
// &suffixbak, &hangbak, &lastbak, &minbak);
|
||||
// if (is_error()) goto parcleanup;
|
||||
// }
|
||||
|
||||
parinit = getenv("PARINIT");
|
||||
if (parinit) {
|
||||
if (parinit)
|
||||
{
|
||||
picopy = malloc((strlen(parinit) + 1) * sizeof (char));
|
||||
if (!picopy) {
|
||||
set_error(outofmem);
|
||||
goto parcleanup;
|
||||
}
|
||||
argc_env = 1;
|
||||
argv_env = malloc((argc_env) * sizeof (char*));
|
||||
argv_env[0] = malloc((strlen(argv[0])+1) * sizeof(char));
|
||||
tmp = argv_env[0];
|
||||
strcpy(tmp, argv[0]);
|
||||
strcpy(picopy,parinit);
|
||||
opt = strtok(picopy,whitechars);
|
||||
while (opt) {
|
||||
parseopt(opt, &widthbak, &prefixbak,
|
||||
&suffixbak, &hangbak, &lastbak, &minbak);
|
||||
if (is_error()) goto parcleanup;
|
||||
argc_env ++;
|
||||
argv_env = realloc(argv_env, (argc_env + 1)*sizeof(char*));
|
||||
argv_env[argc_env-1] = malloc((strlen(opt)+1)*sizeof(char));
|
||||
tmp = argv_env[argc_env-1];
|
||||
strcpy(tmp, opt);
|
||||
opt = strtok(NULL,whitechars);
|
||||
}
|
||||
free(picopy);
|
||||
picopy = NULL;
|
||||
argv_env = realloc(argv_env, (argc_env + 1)*sizeof(char*));
|
||||
argv_env[argc_env] = NULL;
|
||||
|
||||
for (size_t i = 0; i < argc_env; i++)
|
||||
{
|
||||
printf("%s\n", argv_env[i]);
|
||||
}
|
||||
|
||||
while (*++argv) {
|
||||
parseopt(*argv, &widthbak, &prefixbak,
|
||||
&suffixbak, &hangbak, &lastbak, &minbak);
|
||||
if (is_error()) goto parcleanup;
|
||||
}
|
||||
|
||||
for (;;) {
|
||||
for (;;) {
|
||||
if (!setOptions(argc_env, (char **)argv_env, &widthbak, &prefixbak, &suffixbak, &hangbak, &lastbak, &minbak))
|
||||
goto parcleanup;
|
||||
freelines(argv_env);
|
||||
}
|
||||
if (!setOptions(argc, (char **)argv, &widthbak, &prefixbak, &suffixbak, &hangbak, &lastbak, &minbak))
|
||||
goto parcleanup;
|
||||
|
||||
printf("width: %d, prefix: %d, suffix: %d, hang: %d, last: %d, min: %d", widthbak, prefixbak, suffixbak, hangbak, lastbak, minbak);
|
||||
|
||||
for (;;)
|
||||
{
|
||||
for (;;)
|
||||
{
|
||||
c = getchar();
|
||||
if (c == EOF) goto parcleanup;
|
||||
if (c != '\n') break;
|
||||
if (c == EOF)
|
||||
goto parcleanup;
|
||||
if (c != '\n')
|
||||
break;
|
||||
putchar(c);
|
||||
}
|
||||
ungetc(c, stdin);
|
||||
|
||||
inlines = readlines();
|
||||
if (is_error()) goto parcleanup;
|
||||
if (!*inlines) {
|
||||
if (is_error())
|
||||
goto parcleanup;
|
||||
if (!*inlines)
|
||||
{
|
||||
free(inlines);
|
||||
inlines = NULL;
|
||||
continue;
|
||||
}
|
||||
|
||||
width = widthbak; prefix = prefixbak; suffix = suffixbak;
|
||||
hang = hangbak; last = lastbak; min = minbak;
|
||||
width = widthbak;
|
||||
prefix = prefixbak;
|
||||
suffix = suffixbak;
|
||||
hang = hangbak;
|
||||
last = lastbak;
|
||||
min = minbak;
|
||||
setdefaults((const char *const *)inlines,
|
||||
&width, &prefix, &suffix, &hang, &last, &min);
|
||||
|
||||
outlines = reformat((const char *const *)inlines,
|
||||
width, prefix, suffix, hang, last, min);
|
||||
if (is_error()) goto parcleanup;
|
||||
if (is_error())
|
||||
goto parcleanup;
|
||||
|
||||
freelines(inlines);
|
||||
inlines = NULL;
|
||||
|
|
@ -347,11 +592,15 @@ int original_main(int argc, const char * const *argv)
|
|||
|
||||
parcleanup:
|
||||
|
||||
if (picopy) free(picopy);
|
||||
if (inlines) freelines(inlines);
|
||||
if (outlines) freelines(outlines);
|
||||
if (picopy)
|
||||
free(picopy);
|
||||
if (inlines)
|
||||
freelines(inlines);
|
||||
if (outlines)
|
||||
freelines(outlines);
|
||||
|
||||
if (is_error()) {
|
||||
if (is_error())
|
||||
{
|
||||
report_error(stderr);
|
||||
clear_error();
|
||||
return (EXIT_FAILURE);
|
||||
|
|
|
|||
|
|
@ -37,7 +37,7 @@ Test(base_suite, basic_test) {
|
|||
*/
|
||||
Test(base_suite, prefix_suffix_test) {
|
||||
char *name = "prefix_suffix";
|
||||
sprintf(program_options, "%s", "w80");
|
||||
sprintf(program_options, "%s", "-w 80");
|
||||
int err = run_using_system(name, "", "", STANDARD_LIMITS);
|
||||
assert_expected_status(EXIT_SUCCESS, err);
|
||||
assert_outfile_matches(name, NULL);
|
||||
|
|
@ -62,7 +62,7 @@ Test(base_suite, valgrind_leak_test) {
|
|||
*/
|
||||
Test(base_suite, valgrind_uninitialized_test) {
|
||||
char *name = "valgrind_uninitialized";
|
||||
sprintf(program_options, "%s", "p10 s10");
|
||||
sprintf(program_options, "%s", "-p 10 -s 10");
|
||||
int err = run_using_system(name, "", "valgrind --leak-check=no --undef-value-errors=yes --error-exitcode=37", STANDARD_LIMITS);
|
||||
assert_no_valgrind_errors(err);
|
||||
assert_expected_status(0x1, err);
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user