DeforaOS/utils
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Implemented recursion

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This commit is contained in:
Pierre Pronchery 2007-03-17 16:06:23 +00:00
parent 258c24e143
commit bab1549e4d
1 changed files with 67 additions and 20 deletions
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87
src/cp.c
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@ -6,9 +6,11 @@
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <dirent.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <libgen.h>
#include <errno.h>
@ -30,11 +32,6 @@ static int _cp_single(Prefs * prefs, char const * src, char const * dst);
static int _cp_multiple(Prefs * prefs, int filec, char * const filev[]);
static int _cp(Prefs * prefs, int filec, char * filev[])
{
/* FIXME
* - cp_multiple already checks if last arg is a dir
* => always call cp_multiple
* if argc == 2 && returns 1, call cp_single
* - blah blah */
struct stat st;
if(stat(filev[filec - 1], &st) == -1)
@ -61,6 +58,7 @@ static int _cp_error(char const * message, int ret)
return ret;
}
static int _single_recurse(Prefs * prefs, char const * src, char const * dst);
static int _cp_single(Prefs * prefs, char const * src, char const * dst)
{
int ret = 0;
@ -81,9 +79,11 @@ static int _cp_single(Prefs * prefs, char const * src, char const * dst)
}
if(S_ISDIR(st.st_mode))
{
if(*prefs & PREFS_r)
return _single_recurse(prefs, src, dst);
fprintf(stderr, "%s%s%s", "cp: ", src,
": Omitting directory\n");
return 1;
return 0;
}
if((fdst = fopen(dst, "w")) == NULL)
{
@ -108,27 +108,77 @@ static int _cp_single(Prefs * prefs, char const * src, char const * dst)
return ret;
}
static int _single_recurse(Prefs * prefs, char const * src, char const * dst)
{
int ret = 0;
size_t srclen;
size_t dstlen;
DIR * dir;
struct dirent * de;
char * ssrc = NULL;
char * sdst = NULL;
char * p;
if(mkdir(dst, 0777) != 0)
return _cp_error(dst, 1);
srclen = strlen(src);
dstlen = strlen(dst);
if((dir = opendir(src)) == NULL)
return _cp_error(src, 1);
while((de = readdir(dir)) != 0)
{
if(de->d_name[0] == '.' && (de->d_name[1] == '\0'
|| (de->d_name[1] == '.'
&& de->d_name[2] == '\0')))
continue;
if((p = realloc(ssrc, srclen + strlen(de->d_name) + 2)) == NULL)
{
ret |= _cp_error(src, 1);
continue;
}
ssrc = p;
sprintf(ssrc, "%s/%s", src, de->d_name);
if((p = realloc(sdst, dstlen + strlen(de->d_name) + 2)) == NULL)
{
ret |= _cp_error(ssrc, 1);
continue;
}
sdst = p;
sprintf(sdst, "%s/%s", dst, de->d_name);
if(de->d_type == DT_DIR)
ret |= _single_recurse(prefs, ssrc, sdst);
else
ret |= _cp_single(prefs, ssrc, sdst);
}
closedir(dir);
free(ssrc);
free(sdst);
return ret;
}
static int _cp_multiple(Prefs * prefs, int filec, char * const filev[])
{
int ret = 0;
char * dst = NULL;
char * dst;
char * sdst = NULL;
char * p;
int i;
int len;
for(i = 0; i < filec - 1; i++)
{
len = strlen(filev[i]) + strlen(filev[filec - 1]) + 2;
if((p = realloc(dst, len * sizeof(char))) == NULL)
dst = basename(filev[i]);
len = strlen(filev[i]) + strlen(dst) + 2;
if((p = realloc(sdst, len * sizeof(char))) == NULL)
{
_cp_error(filev[filec - 1], 0);
continue;
}
dst = p;
sprintf(dst, "%s/%s", filev[filec - 1], filev[i]);
ret |= _cp_single(prefs, filev[i], dst);
sdst = p;
sprintf(sdst, "%s/%s", filev[filec - 1], dst);
ret |= _cp_single(prefs, filev[i], sdst);
}
free(dst);
free(sdst);
return ret;
}
@ -168,18 +218,15 @@ int main(int argc, char * argv[])
prefs |= PREFS_i;
break;
case 'H':
prefs -= prefs & PREFS_L;
prefs -= prefs & PREFS_P;
prefs -= prefs & (PREFS_L | PREFS_P);
prefs |= PREFS_H;
break;
case 'L':
prefs -= prefs & PREFS_H;
prefs -= prefs & PREFS_P;
prefs -= prefs & (PREFS_H | PREFS_P);
prefs |= PREFS_L;
break;
case 'P':
prefs -= prefs & PREFS_H;
prefs -= prefs & PREFS_L;
prefs -= prefs & (PREFS_H | PREFS_L);
prefs |= PREFS_P;
break;
case 'p':
@ -187,7 +234,7 @@ int main(int argc, char * argv[])
break;
case 'r':
case 'R':
prefs -= prefs & PREFS_r;
prefs |= PREFS_r;
break;
default:
return _usage();