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[/] [or1k/] [trunk/] [uclinux/] [userland/] [sash/] [utils.c] - Blame information for rev 1765

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/*
 * Copyright (c) 1993 by David I. Bell
 * Permission is granted to use, distribute, or modify this source,
 * provided that this copyright notice remains intact.
 *
 * Utility routines.
 */
 
#include "sash.h"
 
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <time.h>
#include <utime.h>
#include <fcntl.h>
 
#ifdef L_intflag
 
int intflag;
 
#endif
 
#ifdef L_modestring
 
/*
 * Return the standard ls-like mode string from a file mode.
 * This is static and so is overwritten on each call.
 */
char *
modestring(mode)
{
        static  char    buf[12];
 
        strcpy(buf, "----------");
 
        /*
         * Fill in the file type.
         */
        if (S_ISDIR(mode))
                buf[0] = 'd';
        if (S_ISCHR(mode))
                buf[0] = 'c';
        if (S_ISBLK(mode))
                buf[0] = 'b';
        if (S_ISFIFO(mode))
                buf[0] = 'p';
#ifdef  S_ISLNK
        if (S_ISLNK(mode))
                buf[0] = 'l';
#endif
#ifdef  S_ISSOCK
        if (S_ISSOCK(mode))
                buf[0] = 's';
#endif
 
        /*
         * Now fill in the normal file permissions.
         */
        if (mode & S_IRUSR)
                buf[1] = 'r';
        if (mode & S_IWUSR)
                buf[2] = 'w';
        if (mode & S_IXUSR)
                buf[3] = 'x';
        if (mode & S_IRGRP)
                buf[4] = 'r';
        if (mode & S_IWGRP)
                buf[5] = 'w';
        if (mode & S_IXGRP)
                buf[6] = 'x';
        if (mode & S_IROTH)
                buf[7] = 'r';
        if (mode & S_IWOTH)
                buf[8] = 'w';
        if (mode & S_IXOTH)
                buf[9] = 'x';
 
        /*
         * Finally fill in magic stuff like suid and sticky text.
         */
        if (mode & S_ISUID)
                buf[3] = ((mode & S_IXUSR) ? 's' : 'S');
        if (mode & S_ISGID)
                buf[6] = ((mode & S_IXGRP) ? 's' : 'S');
        if (mode & S_ISVTX)
                buf[9] = ((mode & S_IXOTH) ? 't' : 'T');
 
        return buf;
}
 
#endif
 
#ifdef L_timestring
 
/*
 * Get the time to be used for a file.
 * This is down to the minute for new files, but only the date for old files.
 * The string is returned from a static buffer, and so is overwritten for
 * each call.
 */
char *
timestring(t)
        long    t;
{
        long            now;
        char            *str;
        static  char    buf[26];
 
        time(&now);
 
        str = ctime(&t);
 
        strcpy(buf, &str[4]);
        buf[12] = '\0';
 
        if ((t > now) || (t < now - 365*24*60*60L)) {
                strcpy(&buf[7], &str[20]);
                buf[11] = '\0';
        }
 
        return buf;
}
 
#endif
 
#ifdef L_isadir
 
/*
 * Return TRUE if a filename is a directory.
 * Nonexistant files return FALSE.
 */
BOOL
isadir(name)
        char    *name;
{
        struct  stat    statbuf;
 
        if (stat(name, &statbuf) < 0)
                return FALSE;
 
        return S_ISDIR(statbuf.st_mode);
}
 
#endif
 
#ifdef L_copyfile
 
/*
 * Copy one file to another, while possibly preserving its modes, times,
 * and modes.  Returns TRUE if successful, or FALSE on a failure with an
 * error message output.  (Failure is not indicted if the attributes cannot
 * be set.)
 */
BOOL
copyfile(srcname, destname, setmodes)
        char    *srcname;
        char    *destname;
        BOOL    setmodes;
{
        int             rfd;
        int             wfd;
        int             rcc;
        int             wcc;
        char            *bp;
        struct  stat    statbuf1;
        struct  stat    statbuf2;
        struct  utimbuf times;
        int len = 8192-16;
        char * buf = 0;
 
        if (stat(srcname, &statbuf1) < 0) {
                perror(srcname);
                return FALSE;
        }
 
        if (stat(destname, &statbuf2) < 0) {
                statbuf2.st_ino = -1;
                statbuf2.st_dev = -1;
        }
 
        if ((statbuf1.st_dev == statbuf2.st_dev) &&
                (statbuf1.st_ino == statbuf2.st_ino))
        {
                fprintf(stderr, "Copying file \"%s\" to itself\n", srcname);
                return FALSE;
        }
 
        rfd = open(srcname, 0);
        if (rfd < 0) {
                perror(srcname);
                return FALSE;
        }
 
        wfd = open(destname, O_WRONLY|O_CREAT|O_TRUNC, statbuf1.st_mode);
        if (wfd < 0) {
                perror(destname);
                close(rfd);
                return FALSE;
        }
 
        buf = malloc(len);
        if (!buf) {
                fprintf(stderr,"Unable to allocate buffer of %d bytes\n", len);
                return FALSE;
        }
 
        while ((rcc = read(rfd, buf, len)) > 0) {
                if (intflag) {
                        close(rfd);
                        close(wfd);
                        free(buf);
                        return FALSE;
                }
 
                bp = buf;
                while (rcc > 0) {
                        wcc = write(wfd, bp, rcc);
                        if (wcc < 0) {
                                perror(destname);
                                free(buf);
                                goto error_exit;
                        }
                        bp += wcc;
                        rcc -= wcc;
                }
        }
 
        free(buf);
 
        if (rcc < 0) {
                perror(srcname);
                goto error_exit;
        }
 
        close(rfd);
        if (close(wfd) < 0) {
                perror(destname);
                return FALSE;
        }
 
        if (setmodes) {
                (void) chmod(destname, statbuf1.st_mode);
 
                (void) chown(destname, statbuf1.st_uid, statbuf1.st_gid);
 
                times.actime = statbuf1.st_atime;
                times.modtime = statbuf1.st_mtime;
 
                (void) utime(destname, &times);
        }
 
        return TRUE;
 
 
error_exit:
        close(rfd);
        close(wfd);
 
        return FALSE;
}
 
#endif
 
#ifdef L_buildname
 
/*
 * Build a path name from the specified directory name and file name.
 * If the directory name is NULL, then the original filename is returned.
 * The built path is in a static area, and is overwritten for each call.
 */
char *
buildname(dirname, filename)
        char    *dirname;
        char    *filename;
{
        char            *cp;
        static  char    buf[PATHLEN];
 
        if ((dirname == NULL) || (*dirname == '\0'))
                return filename;
 
        cp = strrchr(filename, '/');
        if (cp)
                filename = cp + 1;
 
        strcpy(buf, dirname);
        strcat(buf, "/");
        strcat(buf, filename);
 
        return buf;
}
 
#endif
 
#ifdef L_expandwildcards
 
/*
 * Expand the wildcards in a filename, if any.
 * Returns an argument list with matching filenames in sorted order.
 * The expanded names are stored in memory chunks which can later all
 * be freed at once.  Returns zero if the name is not a wildcard, or
 * returns the count of matched files if the name is a wildcard and
 * there was at least one match, or returns -1 if either no filenames
 * matched or too many filenames matched (with an error output).
 */
int
expandwildcards(name, maxargc, retargv)
        char    *name;
        int     maxargc;
        char    *retargv[];
{
        char    *last;
        char    *cp1, *cp2, *cp3;
        DIR     *dirp;
        struct  dirent  *dp;
        int     dirlen;
        int     matches;
        char    dirname[PATHLEN];
 
        last = strrchr(name, '/');
        if (last)
                last++;
        else
                last = name;
 
        cp1 = strchr(name, '*');
        cp2 = strchr(name, '?');
        cp3 = strchr(name, '[');
 
        if ((cp1 == NULL) && (cp2 == NULL) && (cp3 == NULL))
                return 0;
 
        if ((cp1 && (cp1 < last)) || (cp2 && (cp2 < last)) ||
                (cp3 && (cp3 < last)))
        {
                fprintf(stderr, "Wildcards only implemented for last filename component\n");
                return -1;
        }
 
        dirname[0] = '.';
        dirname[1] = '\0';
 
        if (last != name) {
                memcpy(dirname, name, last - name);
                dirname[last - name - 1] = '\0';
                if (dirname[0] == '\0') {
                        dirname[0] = '/';
                        dirname[1] = '\0';
                }
        }
 
        dirp = opendir(dirname);
        if (dirp == NULL) {
                perror(dirname);
                return -1;
        }
 
        dirlen = strlen(dirname);
        if (last == name) {
                dirlen = 0;
                dirname[0] = '\0';
        } else if (dirname[dirlen - 1] != '/') {
                dirname[dirlen++] = '/';
                dirname[dirlen] = '\0';
        }
 
        matches = 0;
 
        while ((dp = readdir(dirp)) != NULL) {
                if ((strcmp(dp->d_name, ".") == 0) ||
                        (strcmp(dp->d_name, "..") == 0))
                                continue;
 
                if (!match(dp->d_name, last))
                        continue;
 
                if (matches >= maxargc) {
                        fprintf(stderr, "Too many filename matches\n");
                        closedir(dirp);
                        return -1;
                }
 
                cp1 = getchunk(dirlen + strlen(dp->d_name) + 1);
                if (cp1 == NULL) {
                        fprintf(stderr, "No memory for filename\n");
                        closedir(dirp);
                        return -1;
                }
 
                if (dirlen)
                        memcpy(cp1, dirname, dirlen);
                strcpy(cp1 + dirlen, dp->d_name);
 
                retargv[matches++] = cp1;
        }
 
        closedir(dirp);
 
        if (matches == 0) {
                fprintf(stderr, "No matches\n");
                return -1;
        }
 
        qsort((char *) retargv, matches, sizeof(char *), namesort);
 
        return matches;
}
 
#endif
 
#ifdef L_namesort
 
/*
 * Sort routine for list of filenames.
 */
int
namesort(p1, p2)
        char    **p1;
        char    **p2;
{
        return strcmp(*p1, *p2);
}
 
#endif
 
#ifdef L_match
 
/*
 * Routine to see if a text string is matched by a wildcard pattern.
 * Returns TRUE if the text is matched, or FALSE if it is not matched
 * or if the pattern is invalid.
 *  *           matches zero or more characters
 *  ?           matches a single character
 *  [abc]       matches 'a', 'b' or 'c'
 *  \c          quotes character c
 *  Adapted from code written by Ingo Wilken.
 */
BOOL
match(text, pattern)
        char    *text;
        char    *pattern;
{
        char    *retrypat;
        char    *retrytxt;
        int     ch;
        BOOL    found;
 
        retrypat = NULL;
        retrytxt = NULL;
 
        while (*text || *pattern) {
                ch = *pattern++;
 
                switch (ch) {
                        case '*':
                                retrypat = pattern;
                                retrytxt = text;
                                break;
 
                        case '[':
                                found = FALSE;
                                while ((ch = *pattern++) != ']') {
                                        if (ch == '\\')
                                                ch = *pattern++;
                                        if (ch == '\0')
                                                return FALSE;
                                        if (*text == ch)
                                                found = TRUE;
                                }
                                if (!found) {
                                        pattern = retrypat;
                                        text = ++retrytxt;
                                }
                                /* fall into next case */
 
                        case '?':
                                if (*text++ == '\0')
                                        return FALSE;
                                break;
 
                        case '\\':
                                ch = *pattern++;
                                if (ch == '\0')
                                        return FALSE;
                                /* fall into next case */
 
                        default:
                                if (*text == ch) {
                                        if (*text)
                                                text++;
                                        break;
                                }
                                if (*text) {
                                        pattern = retrypat;
                                        text = ++retrytxt;
                                        break;
                                }
                                return FALSE;
                }
 
                if (pattern == NULL)
                        return FALSE;
        }
        return TRUE;
}
 
#endif
 
#ifdef L_makeargs
 
/*
 * Take a command string, and break it up into an argc, argv list.
 * The returned argument list and strings are in static memory, and so
 * are overwritten on each call.  The argument array is ended with an
 * extra NULL pointer for convenience.  Returns TRUE if successful,
 * or FALSE on an error with a message already output.
 */
BOOL
makeargs(cmd, argcptr, argvptr)
        char    *cmd;
        int     *argcptr;
        char    ***argvptr;
{
        char            *cp;
        int             argc;
        static char     strings[CMDLEN+1];
        static char     *argtable[MAXARGS+1];
 
        /*
         * Copy the command string and then break it apart
         * into separate arguments.
         */
        strcpy(strings, cmd);
        argc = 0;
        cp = strings;
 
        while (*cp) {
                if (argc >= MAXARGS) {
                        fprintf(stderr, "Too many arguments\n");
                        return FALSE;
                }
 
                argtable[argc++] = cp;
 
                while (*cp && !isblank(*cp)) {
                        if (*cp == '"' || *cp == '\'') {
                                char *sp = cp++;
 
                                while (*cp && *cp != *sp)
                                        cp++;
 
                                if (*cp == *sp) {
                                        /* need bcopy for the overlapping regions */
                                        bcopy(sp + 1, sp, (cp - sp) - 1);
                                        bcopy(cp + 1, cp - 1, strlen(cp + 1) + 1);
                                        cp--;
                                }
                        } else
                                cp++;
                }
 
                while (isblank(*cp))
                        *cp++ = '\0';
        }
 
        argtable[argc] = NULL;
 
        *argcptr = argc;
        *argvptr = argtable;
 
        return TRUE;
}
 
#endif
 
#ifdef L_makestring
 
/*
 * Make a NULL-terminated string out of an argc, argv pair.
 * Returns TRUE if successful, or FALSE if the string is too long,
 * with an error message given.  This does not handle spaces within
 * arguments correctly.
 */
BOOL
makestring(argc, argv, buf, buflen)
        char    **argv;
        char    *buf;
{
        int     len;
 
        while (argc-- > 0) {
                len = strlen(*argv);
                if (len >= buflen) {
                        fprintf(stderr, "Argument string too long\n");
                        return FALSE;
                }
 
                strcpy(buf, *argv++);
 
                buf += len;
                buflen -= len;
 
                if (argc)
                        *buf++ = ' ';
                buflen--;
        }
 
        *buf = '\0';
 
        return TRUE;
}
 
#endif
 
#ifdef L_chunks
 
typedef struct  chunk   CHUNK;
#define CHUNKINITSIZE   4
struct  chunk   {
        CHUNK   *next;
        char    data[CHUNKINITSIZE];    /* actually of varying length */
};
 
 
static  CHUNK * chunklist;
 
 
/*
 * Allocate a chunk of memory (like malloc).
 * The difference, though, is that the memory allocated is put on a
 * list of chunks which can be freed all at one time.  You CAN NOT free
 * an individual chunk.
 */
char *
getchunk(size)
{
        CHUNK   *chunk;
 
        if (size < CHUNKINITSIZE)
                size = CHUNKINITSIZE;
 
        chunk = (CHUNK *) malloc(size + sizeof(CHUNK) - CHUNKINITSIZE);
        if (chunk == NULL)
                return NULL;
 
        chunk->next = chunklist;
        chunklist = chunk;
 
        return chunk->data;
}
 
 
/*
 * Free all chunks of memory that had been allocated since the last
 * call to this routine.
 */
void
freechunks()
{
        CHUNK   *chunk;
 
        while (chunklist) {
                chunk = chunklist;
                chunklist = chunk->next;
                free((char *) chunk);
        }
}
 
#endif
 
 
#ifdef L_expandenvvar
 
/* Expand environment variables
 * Variable names must use a-z, A-Z, 0-9, or _
 * Backslashes are also interpreted to preserve the literal value of the
 * next character.
 * Returns NULL if there is an error, otherwise returns a pointer
 * to a static buffer containing the expand command line.
 */
char *
expandenvvar(cmd)
        char    *cmd;
{
        static char newcmd[CMDLEN+1];
        char* newp = newcmd;
        int freelength = CMDLEN;        /* Don't include final terminator */
        char varname[CMDLEN+1];
        char* varp;
        char* value;
        int valuelength;
 
        if (cmd == NULL) {
                return NULL;
        }
 
        if (strlen(cmd) > freelength) {
                fprintf(stderr, "Variable expansion too long\n");
                return NULL;
        }
 
        while (*cmd) {
                switch (*cmd) {
                case '\\':
                        if (freelength < 1) {
                                fprintf(stderr, "Variable expansion too long\n");
                                return NULL;
                        }
                        cmd++;
                        *newp++ = *cmd++;
                        freelength--;
                        break;
 
                case '$':
                        cmd++;
                        varp = varname;
                        while (isalnum(*cmd) || (*cmd == '_')) {
                                *varp++ = *cmd++;
                        }
                        *varp = '\0';
                        if ((*varname) && (value = getenv(varname))) {
                                valuelength = strlen(value);
                                if (valuelength > freelength) {
                                        fprintf(stderr, "Variable expansion too long\n");
                                        return NULL;
                                }
                                strncpy(newp, value, valuelength);
                                newp += valuelength;
                                freelength -= valuelength;
                        }
                        break;
 
                default:
                        if (freelength < 1) {
                                fprintf(stderr, "Variable expansion too long\n");
                                return NULL;
                        }
                        *newp++ = *cmd++;
                        freelength--;
                        break;
                }
        }
 
        *newp = '\0';
 
        return newcmd;
}
 
#endif
 
 
/* END CODE */

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[/] [or1k/] [trunk/] [uclinux/] [userland/] [sash/] [utils.c] - Blame information for rev 1765

Line No.	Rev	Author	Line
1	199	simons	`/*`
2			`* Copyright (c) 1993 by David I. Bell`
3			`* Permission is granted to use, distribute, or modify this source,`
4			`* provided that this copyright notice remains intact.`
5			`*`
6			`* Utility routines.`
7			`*/`
8
9			`#include "sash.h"`
10
11			`#include <sys/types.h>`
12			`#include <sys/stat.h>`
13			`#include <dirent.h>`
14			`#include <time.h>`
15			`#include <utime.h>`
16			`#include <fcntl.h>`
17
18			`#ifdef L_intflag`
19
20			`int intflag;`
21
22			`#endif`
23
24			`#ifdef L_modestring`
25
26			`/*`
27			`* Return the standard ls-like mode string from a file mode.`
28			`* This is static and so is overwritten on each call.`
29			`*/`
30			`char *`
31			`modestring(mode)`
32			`{`
33			`static char buf[12];`
34
35			`strcpy(buf, "----------");`
36
37			`/*`
38			`* Fill in the file type.`
39			`*/`
40			`if (S_ISDIR(mode))`
41			`buf[0] = 'd';`
42			`if (S_ISCHR(mode))`
43			`buf[0] = 'c';`
44			`if (S_ISBLK(mode))`
45			`buf[0] = 'b';`
46			`if (S_ISFIFO(mode))`
47			`buf[0] = 'p';`
48			`#ifdef S_ISLNK`
49			`if (S_ISLNK(mode))`
50			`buf[0] = 'l';`
51			`#endif`
52			`#ifdef S_ISSOCK`
53			`if (S_ISSOCK(mode))`
54			`buf[0] = 's';`
55			`#endif`
56
57			`/*`
58			`* Now fill in the normal file permissions.`
59			`*/`
60			`if (mode & S_IRUSR)`
61			`buf[1] = 'r';`
62			`if (mode & S_IWUSR)`
63			`buf[2] = 'w';`
64			`if (mode & S_IXUSR)`
65			`buf[3] = 'x';`
66			`if (mode & S_IRGRP)`
67			`buf[4] = 'r';`
68			`if (mode & S_IWGRP)`
69			`buf[5] = 'w';`
70			`if (mode & S_IXGRP)`
71			`buf[6] = 'x';`
72			`if (mode & S_IROTH)`
73			`buf[7] = 'r';`
74			`if (mode & S_IWOTH)`
75			`buf[8] = 'w';`
76			`if (mode & S_IXOTH)`
77			`buf[9] = 'x';`
78
79			`/*`
80			`* Finally fill in magic stuff like suid and sticky text.`
81			`*/`
82			`if (mode & S_ISUID)`
83			`buf[3] = ((mode & S_IXUSR) ? 's' : 'S');`
84			`if (mode & S_ISGID)`
85			`buf[6] = ((mode & S_IXGRP) ? 's' : 'S');`
86			`if (mode & S_ISVTX)`
87			`buf[9] = ((mode & S_IXOTH) ? 't' : 'T');`
88
89			`return buf;`
90			`}`
91
92			`#endif`
93
94			`#ifdef L_timestring`
95
96			`/*`
97			`* Get the time to be used for a file.`
98			`* This is down to the minute for new files, but only the date for old files.`
99			`* The string is returned from a static buffer, and so is overwritten for`
100			`* each call.`
101			`*/`
102			`char *`
103			`timestring(t)`
104			`long t;`
105			`{`
106			`long now;`
107			`char *str;`
108			`static char buf[26];`
109
110			`time(&now);`
111
112			`str = ctime(&t);`
113
114			`strcpy(buf, &str[4]);`
115			`buf[12] = '\0';`
116
117			`if ((t > now) \|\| (t < now - 3652460*60L)) {`
118			`strcpy(&buf[7], &str[20]);`
119			`buf[11] = '\0';`
120			`}`
121
122			`return buf;`
123			`}`
124
125			`#endif`
126
127			`#ifdef L_isadir`
128
129			`/*`
130			`* Return TRUE if a filename is a directory.`
131			`* Nonexistant files return FALSE.`
132			`*/`
133			`BOOL`
134			`isadir(name)`
135			`char *name;`
136			`{`
137			`struct stat statbuf;`
138
139			`if (stat(name, &statbuf) < 0)`
140			`return FALSE;`
141
142			`return S_ISDIR(statbuf.st_mode);`
143			`}`
144
145			`#endif`
146
147			`#ifdef L_copyfile`
148
149			`/*`
150			`* Copy one file to another, while possibly preserving its modes, times,`
151			`* and modes. Returns TRUE if successful, or FALSE on a failure with an`
152			`* error message output. (Failure is not indicted if the attributes cannot`
153			`* be set.)`
154			`*/`
155			`BOOL`
156			`copyfile(srcname, destname, setmodes)`
157			`char *srcname;`
158			`char *destname;`
159			`BOOL setmodes;`
160			`{`
161			`int rfd;`
162			`int wfd;`
163			`int rcc;`
164			`int wcc;`
165			`char *bp;`
166			`struct stat statbuf1;`
167			`struct stat statbuf2;`
168			`struct utimbuf times;`
169			`int len = 8192-16;`
170			`char * buf = 0;`
171
172			`if (stat(srcname, &statbuf1) < 0) {`
173			`perror(srcname);`
174			`return FALSE;`
175			`}`
176
177			`if (stat(destname, &statbuf2) < 0) {`
178			`statbuf2.st_ino = -1;`
179			`statbuf2.st_dev = -1;`
180			`}`
181
182			`if ((statbuf1.st_dev == statbuf2.st_dev) &&`
183			`(statbuf1.st_ino == statbuf2.st_ino))`
184			`{`
185			`fprintf(stderr, "Copying file \"%s\" to itself\n", srcname);`
186			`return FALSE;`
187			`}`
188
189			`rfd = open(srcname, 0);`
190			`if (rfd < 0) {`
191			`perror(srcname);`
192			`return FALSE;`
193			`}`
194
195			`wfd = open(destname, O_WRONLY\|O_CREAT\|O_TRUNC, statbuf1.st_mode);`
196			`if (wfd < 0) {`
197			`perror(destname);`
198			`close(rfd);`
199			`return FALSE;`
200			`}`
201
202			`buf = malloc(len);`
203			`if (!buf) {`
204			`fprintf(stderr,"Unable to allocate buffer of %d bytes\n", len);`
205			`return FALSE;`
206			`}`
207
208			`while ((rcc = read(rfd, buf, len)) > 0) {`
209			`if (intflag) {`
210			`close(rfd);`
211			`close(wfd);`
212			`free(buf);`
213			`return FALSE;`
214			`}`
215
216			`bp = buf;`
217			`while (rcc > 0) {`
218			`wcc = write(wfd, bp, rcc);`
219			`if (wcc < 0) {`
220			`perror(destname);`
221			`free(buf);`
222			`goto error_exit;`
223			`}`
224			`bp += wcc;`
225			`rcc -= wcc;`
226			`}`
227			`}`
228
229			`free(buf);`
230
231			`if (rcc < 0) {`
232			`perror(srcname);`
233			`goto error_exit;`
234			`}`
235
236			`close(rfd);`
237			`if (close(wfd) < 0) {`
238			`perror(destname);`
239			`return FALSE;`
240			`}`
241
242			`if (setmodes) {`
243			`(void) chmod(destname, statbuf1.st_mode);`
244
245			`(void) chown(destname, statbuf1.st_uid, statbuf1.st_gid);`
246
247			`times.actime = statbuf1.st_atime;`
248			`times.modtime = statbuf1.st_mtime;`
249
250			`(void) utime(destname, &times);`
251			`}`
252
253			`return TRUE;`
254
255
256			`error_exit:`
257			`close(rfd);`
258			`close(wfd);`
259
260			`return FALSE;`
261			`}`
262
263			`#endif`
264
265			`#ifdef L_buildname`
266
267			`/*`
268			`* Build a path name from the specified directory name and file name.`
269			`* If the directory name is NULL, then the original filename is returned.`
270			`* The built path is in a static area, and is overwritten for each call.`
271			`*/`
272			`char *`
273			`buildname(dirname, filename)`
274			`char *dirname;`
275			`char *filename;`
276			`{`
277			`char *cp;`
278			`static char buf[PATHLEN];`
279
280			`if ((dirname == NULL) \|\| (*dirname == '\0'))`
281			`return filename;`
282
283			`cp = strrchr(filename, '/');`
284			`if (cp)`
285			`filename = cp + 1;`
286
287			`strcpy(buf, dirname);`
288			`strcat(buf, "/");`
289			`strcat(buf, filename);`
290
291			`return buf;`
292			`}`
293
294			`#endif`
295
296			`#ifdef L_expandwildcards`
297
298			`/*`
299			`* Expand the wildcards in a filename, if any.`
300			`* Returns an argument list with matching filenames in sorted order.`
301			`* The expanded names are stored in memory chunks which can later all`
302			`* be freed at once. Returns zero if the name is not a wildcard, or`
303			`* returns the count of matched files if the name is a wildcard and`
304			`* there was at least one match, or returns -1 if either no filenames`
305			`* matched or too many filenames matched (with an error output).`
306			`*/`
307			`int`
308			`expandwildcards(name, maxargc, retargv)`
309			`char *name;`
310			`int maxargc;`
311			`char *retargv[];`
312			`{`
313			`char *last;`
314			`char cp1, cp2, *cp3;`
315			`DIR *dirp;`
316			`struct dirent *dp;`
317			`int dirlen;`
318			`int matches;`
319			`char dirname[PATHLEN];`
320
321			`last = strrchr(name, '/');`
322			`if (last)`
323			`last++;`
324			`else`
325			`last = name;`
326
327			`cp1 = strchr(name, '*');`
328			`cp2 = strchr(name, '?');`
329			`cp3 = strchr(name, '[');`
330
331			`if ((cp1 == NULL) && (cp2 == NULL) && (cp3 == NULL))`
332			`return 0;`
333
334			`if ((cp1 && (cp1 < last)) \|\| (cp2 && (cp2 < last)) \|\|`
335			`(cp3 && (cp3 < last)))`
336			`{`
337			`fprintf(stderr, "Wildcards only implemented for last filename component\n");`
338			`return -1;`
339			`}`
340
341			`dirname[0] = '.';`
342			`dirname[1] = '\0';`
343
344			`if (last != name) {`
345			`memcpy(dirname, name, last - name);`
346			`dirname[last - name - 1] = '\0';`
347			`if (dirname[0] == '\0') {`
348			`dirname[0] = '/';`
349			`dirname[1] = '\0';`
350			`}`
351			`}`
352
353			`dirp = opendir(dirname);`
354			`if (dirp == NULL) {`
355			`perror(dirname);`
356			`return -1;`
357			`}`
358
359			`dirlen = strlen(dirname);`
360			`if (last == name) {`
361			`dirlen = 0;`
362			`dirname[0] = '\0';`
363			`} else if (dirname[dirlen - 1] != '/') {`
364			`dirname[dirlen++] = '/';`
365			`dirname[dirlen] = '\0';`
366			`}`
367
368			`matches = 0;`
369
370			`while ((dp = readdir(dirp)) != NULL) {`
371			`if ((strcmp(dp->d_name, ".") == 0) \|\|`
372			`(strcmp(dp->d_name, "..") == 0))`
373			`continue;`
374
375			`if (!match(dp->d_name, last))`
376			`continue;`
377
378			`if (matches >= maxargc) {`
379			`fprintf(stderr, "Too many filename matches\n");`
380			`closedir(dirp);`
381			`return -1;`
382			`}`
383
384			`cp1 = getchunk(dirlen + strlen(dp->d_name) + 1);`
385			`if (cp1 == NULL) {`
386			`fprintf(stderr, "No memory for filename\n");`
387			`closedir(dirp);`
388			`return -1;`
389			`}`
390
391			`if (dirlen)`
392			`memcpy(cp1, dirname, dirlen);`
393			`strcpy(cp1 + dirlen, dp->d_name);`
394
395			`retargv[matches++] = cp1;`
396			`}`
397
398			`closedir(dirp);`
399
400			`if (matches == 0) {`
401			`fprintf(stderr, "No matches\n");`
402			`return -1;`
403			`}`
404
405			`qsort((char ) retargv, matches, sizeof(char ), namesort);`
406
407			`return matches;`
408			`}`
409
410			`#endif`
411
412			`#ifdef L_namesort`
413
414			`/*`
415			`* Sort routine for list of filenames.`
416			`*/`
417			`int`
418			`namesort(p1, p2)`
419			`char **p1;`
420			`char **p2;`
421			`{`
422			`return strcmp(p1, p2);`
423			`}`
424
425			`#endif`
426
427			`#ifdef L_match`
428
429			`/*`
430			`* Routine to see if a text string is matched by a wildcard pattern.`
431			`* Returns TRUE if the text is matched, or FALSE if it is not matched`
432			`* or if the pattern is invalid.`
433			`* * matches zero or more characters`
434			`* ? matches a single character`
435			`* [abc] matches 'a', 'b' or 'c'`
436			`* \c quotes character c`
437			`* Adapted from code written by Ingo Wilken.`
438			`*/`
439			`BOOL`
440			`match(text, pattern)`
441			`char *text;`
442			`char *pattern;`
443			`{`
444			`char *retrypat;`
445			`char *retrytxt;`
446			`int ch;`
447			`BOOL found;`
448
449			`retrypat = NULL;`
450			`retrytxt = NULL;`
451
452			`while (text \|\| pattern) {`
453			`ch = *pattern++;`
454
455			`switch (ch) {`
456			`case '*':`
457			`retrypat = pattern;`
458			`retrytxt = text;`
459			`break;`
460
461			`case '[':`
462			`found = FALSE;`
463			`while ((ch = *pattern++) != ']') {`
464			`if (ch == '\\')`
465			`ch = *pattern++;`
466			`if (ch == '\0')`
467			`return FALSE;`
468			`if (*text == ch)`
469			`found = TRUE;`
470			`}`
471			`if (!found) {`
472			`pattern = retrypat;`
473			`text = ++retrytxt;`
474			`}`
475			`/* fall into next case */`
476
477			`case '?':`
478			`if (*text++ == '\0')`
479			`return FALSE;`
480			`break;`
481
482			`case '\\':`
483			`ch = *pattern++;`
484			`if (ch == '\0')`
485			`return FALSE;`
486			`/* fall into next case */`
487
488			`default:`
489			`if (*text == ch) {`
490			`if (*text)`
491			`text++;`
492			`break;`
493			`}`
494			`if (*text) {`
495			`pattern = retrypat;`
496			`text = ++retrytxt;`
497			`break;`
498			`}`
499			`return FALSE;`
500			`}`
501
502			`if (pattern == NULL)`
503			`return FALSE;`
504			`}`
505			`return TRUE;`
506			`}`
507
508			`#endif`
509
510			`#ifdef L_makeargs`
511
512			`/*`
513			`* Take a command string, and break it up into an argc, argv list.`
514			`* The returned argument list and strings are in static memory, and so`
515			`* are overwritten on each call. The argument array is ended with an`
516			`* extra NULL pointer for convenience. Returns TRUE if successful,`
517			`* or FALSE on an error with a message already output.`
518			`*/`
519			`BOOL`
520			`makeargs(cmd, argcptr, argvptr)`
521			`char *cmd;`
522			`int *argcptr;`
523			`char ***argvptr;`
524			`{`
525			`char *cp;`
526			`int argc;`
527			`static char strings[CMDLEN+1];`
528			`static char *argtable[MAXARGS+1];`
529
530			`/*`
531			`* Copy the command string and then break it apart`
532			`* into separate arguments.`
533			`*/`
534			`strcpy(strings, cmd);`
535			`argc = 0;`
536			`cp = strings;`
537
538			`while (*cp) {`
539			`if (argc >= MAXARGS) {`
540			`fprintf(stderr, "Too many arguments\n");`
541			`return FALSE;`
542			`}`
543
544			`argtable[argc++] = cp;`
545
546			`while (cp && !isblank(cp)) {`
547			`if (cp == '"' \|\| cp == '\'') {`
548			`char *sp = cp++;`
549
550			`while (cp && cp != *sp)`
551			`cp++;`
552
553			`if (cp == sp) {`
554			`/* need bcopy for the overlapping regions */`
555			`bcopy(sp + 1, sp, (cp - sp) - 1);`
556			`bcopy(cp + 1, cp - 1, strlen(cp + 1) + 1);`
557			`cp--;`
558			`}`
559			`} else`
560			`cp++;`
561			`}`
562
563			`while (isblank(*cp))`
564			`*cp++ = '\0';`
565			`}`
566
567			`argtable[argc] = NULL;`
568
569			`*argcptr = argc;`
570			`*argvptr = argtable;`
571
572			`return TRUE;`
573			`}`
574
575			`#endif`
576
577			`#ifdef L_makestring`
578
579			`/*`
580			`* Make a NULL-terminated string out of an argc, argv pair.`
581			`* Returns TRUE if successful, or FALSE if the string is too long,`
582			`* with an error message given. This does not handle spaces within`
583			`* arguments correctly.`
584			`*/`
585			`BOOL`
586			`makestring(argc, argv, buf, buflen)`
587			`char **argv;`
588			`char *buf;`
589			`{`
590			`int len;`
591
592			`while (argc-- > 0) {`
593			`len = strlen(*argv);`
594			`if (len >= buflen) {`
595			`fprintf(stderr, "Argument string too long\n");`
596			`return FALSE;`
597			`}`
598
599			`strcpy(buf, *argv++);`
600
601			`buf += len;`
602			`buflen -= len;`
603
604			`if (argc)`
605			`*buf++ = ' ';`
606			`buflen--;`
607			`}`
608
609			`*buf = '\0';`
610
611			`return TRUE;`
612			`}`
613
614			`#endif`
615
616			`#ifdef L_chunks`
617
618			`typedef struct chunk CHUNK;`
619			`#define CHUNKINITSIZE 4`
620			`struct chunk {`
621			`CHUNK *next;`
622			`char data[CHUNKINITSIZE]; /* actually of varying length */`
623			`};`
624
625
626			`static CHUNK * chunklist;`
627
628
629			`/*`
630			`* Allocate a chunk of memory (like malloc).`
631			`* The difference, though, is that the memory allocated is put on a`
632			`* list of chunks which can be freed all at one time. You CAN NOT free`
633			`* an individual chunk.`
634			`*/`
635			`char *`
636			`getchunk(size)`
637			`{`
638			`CHUNK *chunk;`
639
640			`if (size < CHUNKINITSIZE)`
641			`size = CHUNKINITSIZE;`
642
643			`chunk = (CHUNK *) malloc(size + sizeof(CHUNK) - CHUNKINITSIZE);`
644			`if (chunk == NULL)`
645			`return NULL;`
646
647			`chunk->next = chunklist;`
648			`chunklist = chunk;`
649
650			`return chunk->data;`
651			`}`
652
653
654			`/*`
655			`* Free all chunks of memory that had been allocated since the last`
656			`* call to this routine.`
657			`*/`
658			`void`
659			`freechunks()`
660			`{`
661			`CHUNK *chunk;`
662
663			`while (chunklist) {`
664			`chunk = chunklist;`
665			`chunklist = chunk->next;`
666			`free((char *) chunk);`
667			`}`
668			`}`
669
670			`#endif`
671
672
673			`#ifdef L_expandenvvar`
674
675			`/* Expand environment variables`
676			`* Variable names must use a-z, A-Z, 0-9, or _`
677			`* Backslashes are also interpreted to preserve the literal value of the`
678			`* next character.`
679			`* Returns NULL if there is an error, otherwise returns a pointer`
680			`* to a static buffer containing the expand command line.`
681			`*/`
682			`char *`
683			`expandenvvar(cmd)`
684			`char *cmd;`
685			`{`
686			`static char newcmd[CMDLEN+1];`
687			`char* newp = newcmd;`
688			`int freelength = CMDLEN; /* Don't include final terminator */`
689			`char varname[CMDLEN+1];`
690			`char* varp;`
691			`char* value;`
692			`int valuelength;`
693
694			`if (cmd == NULL) {`
695			`return NULL;`
696			`}`
697
698			`if (strlen(cmd) > freelength) {`
699			`fprintf(stderr, "Variable expansion too long\n");`
700			`return NULL;`
701			`}`
702
703			`while (*cmd) {`
704			`switch (*cmd) {`
705			`case '\\':`
706			`if (freelength < 1) {`
707			`fprintf(stderr, "Variable expansion too long\n");`
708			`return NULL;`
709			`}`
710			`cmd++;`
711			`newp++ = cmd++;`
712			`freelength--;`
713			`break;`
714
715			`case '$':`
716			`cmd++;`
717			`varp = varname;`
718			`while (isalnum(cmd) \|\| (cmd == '_')) {`
719			`varp++ = cmd++;`
720			`}`
721			`*varp = '\0';`
722			`if ((*varname) && (value = getenv(varname))) {`
723			`valuelength = strlen(value);`
724			`if (valuelength > freelength) {`
725			`fprintf(stderr, "Variable expansion too long\n");`
726			`return NULL;`
727			`}`
728			`strncpy(newp, value, valuelength);`
729			`newp += valuelength;`
730			`freelength -= valuelength;`
731			`}`
732			`break;`
733
734			`default:`
735			`if (freelength < 1) {`
736			`fprintf(stderr, "Variable expansion too long\n");`
737			`return NULL;`
738			`}`
739			`newp++ = cmd++;`
740			`freelength--;`
741			`break;`
742			`}`
743			`}`
744
745			`*newp = '\0';`
746
747			`return newcmd;`
748			`}`
749
750			`#endif`
751
752
753			`/* END CODE */`