Rewrite to use getopt and return instead of exit, a seperate function (fs_link) does the actual work.

This commit is contained in:
Glenn L McGrath 2000-10-04 09:34:35 +00:00
parent b520e083e0
commit aa3908d1b7
2 changed files with 138 additions and 166 deletions

View File

@ -30,96 +30,82 @@
#include <dirent.h> #include <dirent.h>
#include <errno.h> #include <errno.h>
static int symlinkFlag = FALSE; #define LN_SYMLINK 1
static int removeoldFlag = FALSE; #define LN_FORCE 2
static int followLinks = TRUE; #define LN_NODEREFERENCE 4
/*
* linkDestName is where the link points to,
* linkSrcName is the name of the link to be created.
*/
static int fs_link(const char *link_DestName, const char *link_SrcName, const int flag)
{
int status;
int srcIsDir;
char *srcName;
if (link_DestName==NULL)
return(FALSE);
srcName = (char *) malloc(strlen(link_SrcName)+strlen(link_DestName)+1);
if (link_SrcName==NULL)
strcpy(srcName, link_DestName);
else
strcpy(srcName, link_SrcName);
if (flag&LN_NODEREFERENCE)
srcIsDir = isDirectory(srcName, TRUE, NULL);
else
srcIsDir = isDirectory(srcName, FALSE, NULL);
if ((srcIsDir==TRUE)&&((flag&LN_NODEREFERENCE)==0)) {
strcat(srcName, "/");
strcat(srcName, link_DestName);
}
if (flag&LN_FORCE)
unlink(srcName);
if (flag&LN_SYMLINK)
status = symlink(link_DestName, srcName);
else
status = link(link_DestName, srcName);
if (status != 0) {
perror(srcName);
return(FALSE);
}
return(TRUE);
}
extern int ln_main(int argc, char **argv) extern int ln_main(int argc, char **argv)
{ {
char *linkName, *dirName=NULL; int flag = 0;
int linkIntoDirFlag; int opt;
int stopIt = FALSE;
argc--;
argv++;
/* Parse any options */ /* Parse any options */
while (argc > 0 && stopIt == FALSE) { while ((opt=getopt(argc, argv, "sfn")) != -1) {
if (**argv == '-') { switch(opt) {
while (*++(*argv)) case 's':
switch (**argv) { flag |= LN_SYMLINK;
case 's': break;
symlinkFlag = TRUE; case 'f':
break; flag |= LN_FORCE;
case 'f': break;
removeoldFlag = TRUE; case 'n':
break; flag |= LN_NODEREFERENCE;
case 'n': break;
followLinks = FALSE; default:
break; usage(ln_usage);
case '-':
stopIt = TRUE;
break;
default:
usage(ln_usage);
}
argc--;
argv++;
} }
else
break;
} }
while(optind<(argc-1)) {
if (argc < 2) { if (fs_link(argv[optind], argv[argc-1], flag)==FALSE)
usage(ln_usage); return(FALSE);
optind++;
} }
return(TRUE);
linkName = argv[argc - 1];
linkIntoDirFlag = isDirectory(linkName, followLinks, NULL);
if ((argc >= 3) && linkIntoDirFlag == FALSE) {
errorMsg(not_a_directory, linkName);
exit FALSE;
}
if (linkIntoDirFlag == TRUE)
dirName = linkName;
while (argc-- >= 2) {
int status;
if (linkIntoDirFlag == TRUE) {
char *baseName = get_last_path_component(*argv);
linkName = (char *)xmalloc(strlen(dirName)+strlen(baseName)+2);
strcpy(linkName, dirName);
if(dirName[strlen(dirName)-1] != '/')
strcat(linkName, "/");
strcat(linkName,baseName);
}
if (removeoldFlag == TRUE) {
status = (unlink(linkName) && errno != ENOENT);
if (status != 0) {
perror(linkName);
exit FALSE;
}
}
if (symlinkFlag == TRUE)
status = symlink(*argv, linkName);
else
status = link(*argv, linkName);
if (status != 0) {
perror(linkName);
exit FALSE;
}
if (linkIntoDirFlag == TRUE)
free(linkName);
argv++;
}
return( TRUE);
} }
/* /*

152
ln.c
View File

@ -30,96 +30,82 @@
#include <dirent.h> #include <dirent.h>
#include <errno.h> #include <errno.h>
static int symlinkFlag = FALSE; #define LN_SYMLINK 1
static int removeoldFlag = FALSE; #define LN_FORCE 2
static int followLinks = TRUE; #define LN_NODEREFERENCE 4
/*
* linkDestName is where the link points to,
* linkSrcName is the name of the link to be created.
*/
static int fs_link(const char *link_DestName, const char *link_SrcName, const int flag)
{
int status;
int srcIsDir;
char *srcName;
if (link_DestName==NULL)
return(FALSE);
srcName = (char *) malloc(strlen(link_SrcName)+strlen(link_DestName)+1);
if (link_SrcName==NULL)
strcpy(srcName, link_DestName);
else
strcpy(srcName, link_SrcName);
if (flag&LN_NODEREFERENCE)
srcIsDir = isDirectory(srcName, TRUE, NULL);
else
srcIsDir = isDirectory(srcName, FALSE, NULL);
if ((srcIsDir==TRUE)&&((flag&LN_NODEREFERENCE)==0)) {
strcat(srcName, "/");
strcat(srcName, link_DestName);
}
if (flag&LN_FORCE)
unlink(srcName);
if (flag&LN_SYMLINK)
status = symlink(link_DestName, srcName);
else
status = link(link_DestName, srcName);
if (status != 0) {
perror(srcName);
return(FALSE);
}
return(TRUE);
}
extern int ln_main(int argc, char **argv) extern int ln_main(int argc, char **argv)
{ {
char *linkName, *dirName=NULL; int flag = 0;
int linkIntoDirFlag; int opt;
int stopIt = FALSE;
argc--;
argv++;
/* Parse any options */ /* Parse any options */
while (argc > 0 && stopIt == FALSE) { while ((opt=getopt(argc, argv, "sfn")) != -1) {
if (**argv == '-') { switch(opt) {
while (*++(*argv)) case 's':
switch (**argv) { flag |= LN_SYMLINK;
case 's': break;
symlinkFlag = TRUE; case 'f':
break; flag |= LN_FORCE;
case 'f': break;
removeoldFlag = TRUE; case 'n':
break; flag |= LN_NODEREFERENCE;
case 'n': break;
followLinks = FALSE; default:
break; usage(ln_usage);
case '-':
stopIt = TRUE;
break;
default:
usage(ln_usage);
}
argc--;
argv++;
} }
else
break;
} }
while(optind<(argc-1)) {
if (argc < 2) { if (fs_link(argv[optind], argv[argc-1], flag)==FALSE)
usage(ln_usage); return(FALSE);
optind++;
} }
return(TRUE);
linkName = argv[argc - 1];
linkIntoDirFlag = isDirectory(linkName, followLinks, NULL);
if ((argc >= 3) && linkIntoDirFlag == FALSE) {
errorMsg(not_a_directory, linkName);
exit FALSE;
}
if (linkIntoDirFlag == TRUE)
dirName = linkName;
while (argc-- >= 2) {
int status;
if (linkIntoDirFlag == TRUE) {
char *baseName = get_last_path_component(*argv);
linkName = (char *)xmalloc(strlen(dirName)+strlen(baseName)+2);
strcpy(linkName, dirName);
if(dirName[strlen(dirName)-1] != '/')
strcat(linkName, "/");
strcat(linkName,baseName);
}
if (removeoldFlag == TRUE) {
status = (unlink(linkName) && errno != ENOENT);
if (status != 0) {
perror(linkName);
exit FALSE;
}
}
if (symlinkFlag == TRUE)
status = symlink(*argv, linkName);
else
status = link(*argv, linkName);
if (status != 0) {
perror(linkName);
exit FALSE;
}
if (linkIntoDirFlag == TRUE)
free(linkName);
argv++;
}
return( TRUE);
} }
/* /*