744 lines
14 KiB
C
744 lines
14 KiB
C
/* $Id: indep.c,v 1.32 2003/02/05 16:45:08 ukai Exp $ */
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#include "fm.h"
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#include <stdio.h>
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#include <pwd.h>
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#include <sys/param.h>
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#include <sys/types.h>
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#include <stdlib.h>
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#include "indep.h"
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#include "Str.h"
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#include "gc.h"
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#include "myctype.h"
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#include "entity.h"
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unsigned char QUOTE_MAP[0x100] = {
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/* NUL SOH STX ETX EOT ENQ ACK BEL BS HT LF VT FF CR SO SI */
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24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
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/* DLE DC1 DC2 DC3 DC4 NAK SYN ETB CAN EM SUB ESC FS GS RS US */
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24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
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/* SPC ! " # $ % & ' ( ) * + , - . / */
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24, 72, 76, 40, 8, 40, 41, 72, 72, 72, 72, 40, 72, 8, 0, 64,
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/* 0 1 2 3 4 5 6 7 8 9 : ; < = > ? */
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 72, 74, 72, 75, 40,
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/* @ A B C D E F G H I J K L M N O */
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72, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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/* P Q R S T U V W X Y Z [ \ ] ^ _ */
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 72, 72, 72, 72, 0,
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/* ` a b c d e f g h i j k l m n o */
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72, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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/* p q r s t u v w x y z { | } ~ DEL */
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 72, 72, 72, 72, 24,
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16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
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16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
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16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
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16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
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16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
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16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
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16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
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16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
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};
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char *HTML_QUOTE_MAP[] = {
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NULL,
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"&",
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"<",
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">",
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""",
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NULL,
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NULL,
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NULL,
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};
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clen_t
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strtoclen(const char *s)
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{
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#ifdef HAVE_STRTOLL
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return strtoll(s, NULL, 10);
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#elif defined(HAVE_STRTOQ)
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return strtoq(s, NULL, 10);
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#elif defined(HAVE_ATOLL)
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return atoll(s);
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#elif defined(HAVE_ATOQ)
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return atoq(s);
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#else
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return atoi(s);
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#endif
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}
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#ifndef HAVE_BCOPY
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void
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bcopy(const void *src, void *dest, int len)
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{
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int i;
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if (src == dest)
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return;
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if (src < dest) {
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for (i = len - 1; i >= 0; i--)
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((char *)dest)[i] = ((const char *)src)[i];
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}
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else { /* src > dest */
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for (i = 0; i < len; i++)
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((char *)dest)[i] = ((const char *)src)[i];
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}
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}
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void
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bzero(void *ptr, int len)
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{
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int i;
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char *p = ptr;
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for (i = 0; i < len; i++)
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*(p++) = 0;
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}
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#endif /* not HAVE_BCOPY */
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char *
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allocStr(const char *s, int len)
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{
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char *ptr;
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if (s == NULL)
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return NULL;
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if (len < 0)
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len = strlen(s);
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ptr = NewAtom_N(char, len + 1);
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if (ptr == NULL) {
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fprintf(stderr, "fm: Can't allocate string. Give me more memory!\n");
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exit(-1);
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}
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bcopy(s, ptr, len);
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ptr[len] = '\0';
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return ptr;
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}
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int
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strCmp(const void *s1, const void *s2)
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{
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return strcmp(*(const char **)s1, *(const char **)s2);
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}
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char *
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currentdir()
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{
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char *path;
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#ifdef HAVE_GETCWD
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#ifdef MAXPATHLEN
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path = NewAtom_N(char, MAXPATHLEN);
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getcwd(path, MAXPATHLEN);
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#else
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path = getcwd(NULL, 0);
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#endif
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#else /* not HAVE_GETCWD */
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#ifdef HAVE_GETWD
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path = NewAtom_N(char, 1024);
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getwd(path);
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#else /* not HAVE_GETWD */
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FILE *f;
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char *p;
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path = NewAtom_N(char, 1024);
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f = popen("pwd", "r");
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fgets(path, 1024, f);
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pclose(f);
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for (p = path; *p; p++)
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if (*p == '\n') {
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*p = '\0';
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break;
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}
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#endif /* not HAVE_GETWD */
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#endif /* not HAVE_GETCWD */
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return path;
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}
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char *
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cleanupName(char *name)
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{
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char *buf, *p, *q;
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buf = allocStr(name, -1);
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p = buf;
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q = name;
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while (*q != '\0') {
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if (strncmp(p, "/../", 4) == 0) { /* foo/bar/../FOO */
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if (p - 2 == buf && strncmp(p - 2, "..", 2) == 0) {
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/* ../../ */
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p += 3;
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q += 3;
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}
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else if (p - 3 >= buf && strncmp(p - 3, "/..", 3) == 0) {
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/* ../../../ */
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p += 3;
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q += 3;
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}
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else {
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while (p != buf && *--p != '/') ; /* ->foo/FOO */
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*p = '\0';
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q += 3;
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strcat(buf, q);
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}
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}
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else if (strcmp(p, "/..") == 0) { /* foo/bar/.. */
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if (p - 2 == buf && strncmp(p - 2, "..", 2) == 0) {
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/* ../.. */
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}
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else if (p - 3 >= buf && strncmp(p - 3, "/..", 3) == 0) {
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/* ../../.. */
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}
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else {
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while (p != buf && *--p != '/') ; /* ->foo/ */
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*++p = '\0';
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}
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break;
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}
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else if (strncmp(p, "/./", 3) == 0) { /* foo/./bar */
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*p = '\0'; /* -> foo/bar */
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q += 2;
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strcat(buf, q);
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}
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else if (strcmp(p, "/.") == 0) { /* foo/. */
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*++p = '\0'; /* -> foo/ */
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break;
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}
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else if (strncmp(p, "//", 2) == 0) { /* foo//bar */
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/* -> foo/bar */
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*p = '\0';
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q++;
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strcat(buf, q);
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}
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else {
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p++;
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q++;
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}
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}
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return buf;
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}
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char *
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expandPath(char *name)
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{
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char *p;
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struct passwd *passent, *getpwnam(const char *);
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Str extpath = NULL;
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if (name == NULL)
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return NULL;
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p = name;
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if (*p == '~') {
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p++;
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if (IS_ALPHA(*p)) {
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char *q = strchr(p, '/');
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if (q) { /* ~user/dir... */
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passent = getpwnam(allocStr(p, q - p));
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p = q;
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}
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else { /* ~user */
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passent = getpwnam(p);
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p = "";
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}
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if (!passent)
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goto rest;
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extpath = Strnew_charp(passent->pw_dir);
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}
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else if (*p == '/' || *p == '\0') { /* ~/dir... or ~ */
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extpath = Strnew_charp(getenv("HOME"));
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}
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else
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goto rest;
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if (Strcmp_charp(extpath, "/") == 0 && *p == '/')
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p++;
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Strcat_charp(extpath, p);
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return extpath->ptr;
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}
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rest:
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return name;
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}
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#ifndef HAVE_STRCHR
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char *
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strchr(const char *s, int c)
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{
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while (*s) {
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if ((unsigned char)*s == c)
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return (char *)s;
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s++;
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}
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return NULL;
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}
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#endif /* not HAVE_STRCHR */
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#ifndef HAVE_STRCASECMP
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int
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strcasecmp(const char *s1, const char *s2)
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{
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int x;
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while (*s1) {
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x = TOLOWER(*s1) - TOLOWER(*s2);
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if (x != 0)
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return x;
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s1++;
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s2++;
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}
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return -TOLOWER(*s2);
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}
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int
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strncasecmp(const char *s1, const char *s2, size_t n)
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{
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int x;
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while (*s1 && n) {
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x = TOLOWER(*s1) - TOLOWER(*s2);
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if (x != 0)
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return x;
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s1++;
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s2++;
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n--;
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}
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return n ? -TOLOWER(*s2) : 0;
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}
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#endif /* not HAVE_STRCASECMP */
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#ifndef HAVE_STRCASESTR
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/* string search using the simplest algorithm */
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char *
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strcasestr(const char *s1, const char *s2)
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{
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int len1, len2;
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if (s2 == NULL)
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return (char *)s1;
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if (*s2 == '\0')
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return (char *)s1;
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len1 = strlen(s1);
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len2 = strlen(s2);
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while (*s1 && len1 >= len2) {
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if (strncasecmp(s1, s2, len2) == 0)
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return (char *)s1;
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s1++;
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len1--;
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}
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return 0;
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}
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#endif
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static int
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strcasematch(char *s1, char *s2)
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{
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int x;
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while (*s1) {
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if (*s2 == '\0')
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return 1;
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x = TOLOWER(*s1) - TOLOWER(*s2);
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if (x != 0)
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break;
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s1++;
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s2++;
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}
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return (*s2 == '\0');
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}
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/* search multiple strings */
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int
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strcasemstr(char *str, char *srch[], char **ret_ptr)
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{
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int i;
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while (*str) {
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for (i = 0; srch[i]; i++) {
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if (strcasematch(str, srch[i])) {
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if (ret_ptr)
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*ret_ptr = str;
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return i;
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}
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}
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str++;
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}
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return -1;
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}
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char *
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remove_space(char *str)
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{
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char *p, *q;
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for (p = str; *p && IS_SPACE(*p); p++) ;
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for (q = p; *q; q++) ;
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for (; q > p && IS_SPACE(*(q - 1)); q--) ;
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if (*q != '\0')
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return Strnew_charp_n(p, q - p)->ptr;
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return p;
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}
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int
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non_null(char *s)
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{
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if (s == NULL)
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return FALSE;
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while (*s) {
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if (!IS_SPACE(*s))
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return TRUE;
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s++;
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}
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return FALSE;
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}
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void
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cleanup_line(Str s, int mode)
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{
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if (s->length >= 2 &&
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s->ptr[s->length - 2] == '\r' && s->ptr[s->length - 1] == '\n') {
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Strshrink(s, 2);
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Strcat_char(s, '\n');
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}
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else if (Strlastchar(s) == '\r')
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s->ptr[s->length - 1] = '\n';
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else if (Strlastchar(s) != '\n')
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Strcat_char(s, '\n');
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if (mode != PAGER_MODE) {
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int i;
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for (i = 0; i < s->length; i++) {
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if (s->ptr[i] == '\0')
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s->ptr[i] = ' ';
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}
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}
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}
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int
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getescapechar(char **str)
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{
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int dummy = -1;
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char *p = *str, *q;
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int strict_entity = TRUE;
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if (*p == '&')
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p++;
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if (*p == '#') {
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p++;
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if (*p == 'x' || *p == 'X') {
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p++;
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if (!IS_XDIGIT(*p)) {
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*str = p;
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return -1;
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}
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for (dummy = GET_MYCDIGIT(*p), p++; IS_XDIGIT(*p); p++)
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dummy = dummy * 0x10 + GET_MYCDIGIT(*p);
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if (*p == ';')
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p++;
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*str = p;
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return dummy;
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}
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else {
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if (!IS_DIGIT(*p)) {
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*str = p;
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return -1;
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}
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for (dummy = GET_MYCDIGIT(*p), p++; IS_DIGIT(*p); p++)
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dummy = dummy * 10 + GET_MYCDIGIT(*p);
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if (*p == ';')
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p++;
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*str = p;
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return dummy;
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}
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}
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if (!IS_ALPHA(*p)) {
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*str = p;
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return -1;
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}
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q = p;
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for (p++; IS_ALNUM(*p); p++) ;
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q = allocStr(q, p - q);
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if (strcasestr("lt gt amp quot nbsp", q) && *p != '=') {
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/* a character entity MUST be terminated with ";". However,
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* there's MANY web pages which uses < , > or something
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* like them as <, >, etc. Therefore, we treat the most
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* popular character entities (including &#xxxx;) without
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* the last ";" as character entities. If the trailing character
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* is "=", it must be a part of query in an URL. So <=, >=, etc.
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* are not regarded as character entities.
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*/
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strict_entity = FALSE;
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}
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if (*p == ';')
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p++;
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else if (strict_entity) {
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*str = p;
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return -1;
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}
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*str = p;
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return getHash_si(&entity, q, -1);
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}
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char *
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getescapecmd(char **s)
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{
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char *save = *s;
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Str tmp;
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int ch = getescapechar(s);
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if (ch >= 0)
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return conv_entity(ch);
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if (*save != '&')
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tmp = Strnew_charp("&");
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else
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tmp = Strnew();
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Strcat_charp_n(tmp, save, *s - save);
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return tmp->ptr;
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}
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char *
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html_quote(char *str)
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{
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Str tmp = NULL;
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char *p, *q;
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for (p = str; *p; p++) {
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q = html_quote_char(*p);
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if (q) {
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if (tmp == NULL)
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tmp = Strnew_charp_n(str, (int)(p - str));
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Strcat_charp(tmp, q);
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}
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else {
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if (tmp)
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Strcat_char(tmp, *p);
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}
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}
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if (tmp)
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return tmp->ptr;
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return str;
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}
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char *
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html_unquote(char *str)
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{
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Str tmp = NULL;
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char *p, *q;
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for (p = str; *p;) {
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if (*p == '&') {
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if (tmp == NULL)
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tmp = Strnew_charp_n(str, (int)(p - str));
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q = getescapecmd(&p);
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Strcat_charp(tmp, q);
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}
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else {
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if (tmp)
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Strcat_char(tmp, *p);
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p++;
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}
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}
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if (tmp)
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return tmp->ptr;
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return str;
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}
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static char xdigit[0x10] = "0123456789ABCDEF";
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#define url_unquote_char(pstr) \
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((IS_XDIGIT((*(pstr))[1]) && IS_XDIGIT((*(pstr))[2])) ? \
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(*(pstr) += 3, (GET_MYCDIGIT((*(pstr))[-2]) << 4) | GET_MYCDIGIT((*(pstr))[-1])) : \
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-1)
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char *
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url_quote(char *str)
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{
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Str tmp = NULL;
|
|
char *p;
|
|
|
|
for (p = str; *p; p++) {
|
|
if (is_url_quote(*p)) {
|
|
if (tmp == NULL)
|
|
tmp = Strnew_charp_n(str, (int)(p - str));
|
|
Strcat_char(tmp, '%');
|
|
Strcat_char(tmp, xdigit[((unsigned char)*p >> 4) & 0xF]);
|
|
Strcat_char(tmp, xdigit[(unsigned char)*p & 0xF]);
|
|
}
|
|
else {
|
|
if (tmp)
|
|
Strcat_char(tmp, *p);
|
|
}
|
|
}
|
|
if (tmp)
|
|
return tmp->ptr;
|
|
return str;
|
|
}
|
|
|
|
char *
|
|
file_quote(char *str)
|
|
{
|
|
Str tmp = NULL;
|
|
char *p;
|
|
char buf[4];
|
|
|
|
for (p = str; *p; p++) {
|
|
if (is_file_quote(*p)) {
|
|
if (tmp == NULL)
|
|
tmp = Strnew_charp_n(str, (int)(p - str));
|
|
sprintf(buf, "%%%02X", (unsigned char)*p);
|
|
Strcat_charp(tmp, buf);
|
|
}
|
|
else {
|
|
if (tmp)
|
|
Strcat_char(tmp, *p);
|
|
}
|
|
}
|
|
if (tmp)
|
|
return tmp->ptr;
|
|
return str;
|
|
}
|
|
|
|
char *
|
|
file_unquote(char *str)
|
|
{
|
|
Str tmp = NULL;
|
|
char *p, *q;
|
|
int c;
|
|
|
|
for (p = str; *p;) {
|
|
if (*p == '%') {
|
|
q = p;
|
|
c = url_unquote_char(&q);
|
|
if (c >= 0) {
|
|
if (tmp == NULL)
|
|
tmp = Strnew_charp_n(str, (int)(p - str));
|
|
if (c != '\0' && c != '\n' && c != '\r')
|
|
Strcat_char(tmp, (char)c);
|
|
p = q;
|
|
continue;
|
|
}
|
|
}
|
|
if (tmp)
|
|
Strcat_char(tmp, *p);
|
|
p++;
|
|
}
|
|
if (tmp)
|
|
return tmp->ptr;
|
|
return str;
|
|
}
|
|
|
|
Str
|
|
Str_form_quote(Str x)
|
|
{
|
|
Str tmp = NULL;
|
|
char *p = x->ptr, *ep = x->ptr + x->length;
|
|
char buf[4];
|
|
|
|
for (; p < ep; p++) {
|
|
if (*p == ' ') {
|
|
if (tmp == NULL)
|
|
tmp = Strnew_charp_n(x->ptr, (int)(p - x->ptr));
|
|
Strcat_char(tmp, '+');
|
|
}
|
|
else if (is_url_unsafe(*p)) {
|
|
if (tmp == NULL)
|
|
tmp = Strnew_charp_n(x->ptr, (int)(p - x->ptr));
|
|
sprintf(buf, "%%%02X", (unsigned char)*p);
|
|
Strcat_charp(tmp, buf);
|
|
}
|
|
else {
|
|
if (tmp)
|
|
Strcat_char(tmp, *p);
|
|
}
|
|
}
|
|
if (tmp)
|
|
return tmp;
|
|
return x;
|
|
}
|
|
|
|
|
|
Str
|
|
Str_url_unquote(Str x, int is_form, int safe)
|
|
{
|
|
Str tmp = NULL;
|
|
char *p = x->ptr, *ep = x->ptr + x->length, *q;
|
|
int c;
|
|
|
|
for (; p < ep;) {
|
|
if (is_form && *p == '+') {
|
|
if (tmp == NULL)
|
|
tmp = Strnew_charp_n(x->ptr, (int)(p - x->ptr));
|
|
Strcat_char(tmp, ' ');
|
|
p++;
|
|
continue;
|
|
}
|
|
else if (*p == '%') {
|
|
q = p;
|
|
c = url_unquote_char(&q);
|
|
if (c >= 0 && (!safe || !IS_ASCII(c) || !is_file_quote(c))) {
|
|
if (tmp == NULL)
|
|
tmp = Strnew_charp_n(x->ptr, (int)(p - x->ptr));
|
|
Strcat_char(tmp, (char)c);
|
|
p = q;
|
|
continue;
|
|
}
|
|
}
|
|
if (tmp)
|
|
Strcat_char(tmp, *p);
|
|
p++;
|
|
}
|
|
if (tmp)
|
|
return tmp;
|
|
return x;
|
|
}
|
|
|
|
char *
|
|
shell_quote(char *str)
|
|
{
|
|
Str tmp = NULL;
|
|
char *p;
|
|
|
|
for (p = str; *p; p++) {
|
|
if (is_shell_unsafe(*p)) {
|
|
if (tmp == NULL)
|
|
tmp = Strnew_charp_n(str, (int)(p - str));
|
|
Strcat_char(tmp, '\\');
|
|
Strcat_char(tmp, *p);
|
|
}
|
|
else {
|
|
if (tmp)
|
|
Strcat_char(tmp, *p);
|
|
}
|
|
}
|
|
if (tmp)
|
|
return tmp->ptr;
|
|
return str;
|
|
}
|
|
|
|
static char *
|
|
w3m_dir(const char *name, char *dft)
|
|
{
|
|
#ifdef USE_PATH_ENVVAR
|
|
char *value = getenv(name);
|
|
return value ? value : dft;
|
|
#else
|
|
return dft;
|
|
#endif
|
|
}
|
|
|
|
char *
|
|
w3m_auxbin_dir()
|
|
{
|
|
return w3m_dir("W3M_AUXBIN_DIR", AUXBIN_DIR);
|
|
}
|
|
|
|
char *
|
|
w3m_lib_dir()
|
|
{
|
|
return w3m_dir("W3M_LIB_DIR", LIB_DIR);
|
|
}
|
|
|
|
char *
|
|
w3m_etc_dir()
|
|
{
|
|
return w3m_dir("W3M_ETC_DIR", ETC_DIR);
|
|
}
|
|
|
|
char *
|
|
w3m_help_dir()
|
|
{
|
|
return w3m_dir("W3M_HELP_DIR", HELP_DIR);
|
|
}
|
|
/* Local Variables: */
|
|
/* c-basic-offset: 4 */
|
|
/* tab-width: 8 */
|
|
/* End: */
|