Commit | Line | Data |
---|---|---|
b2fa28e3 FT |
1 | #include <stdlib.h> |
2 | #include <stdio.h> | |
3 | #include <unistd.h> | |
4 | #include <string.h> | |
5 | #include <libgen.h> | |
1bed4569 | 6 | #include <dirent.h> |
b2fa28e3 FT |
7 | #include <errno.h> |
8 | #include <sys/stat.h> | |
9 | ||
f2bcbba7 FT |
10 | static int ensuredir(char *base, char *dir) |
11 | { | |
12 | if(access(dir, X_OK)) { | |
13 | if((mkdir(base, 0777) && (errno != EEXIST)) || mkdir(dir, 0777)) | |
14 | return(1); | |
15 | } | |
16 | return(0); | |
17 | } | |
18 | ||
1bed4569 FT |
19 | static void checkempty(char *dir) |
20 | { | |
21 | DIR *dh; | |
22 | int empty; | |
23 | struct dirent *de; | |
24 | ||
25 | if((dh = opendir(dir)) == NULL) | |
26 | return; | |
27 | empty = 1; | |
28 | while((de = readdir(dh)) != NULL) { | |
29 | if(de->d_name[0] != '.') { | |
30 | empty = 0; | |
31 | break; | |
32 | } | |
33 | } | |
34 | closedir(dh); | |
35 | if(empty) | |
36 | rmdir(dir); | |
37 | } | |
38 | ||
b2fa28e3 FT |
39 | static void usage(FILE *out) |
40 | { | |
41 | fprintf(out, "usage: nextep [-h] [-f FILE] [-s SET-VALUE] [DIR]\n"); | |
42 | } | |
43 | ||
44 | int main(int argc, char **argv) | |
45 | { | |
46 | int c; | |
47 | char buf[1024], dbuf[1024], *p; | |
48 | char *file, *value, *dir; | |
49 | char base[1024], fpath[1024]; | |
50 | FILE *fp; | |
51 | ||
52 | file = "nextep"; | |
53 | value = NULL; | |
54 | while((c = getopt(argc, argv, "hf:s:")) >= 0) { | |
55 | switch(c) { | |
56 | case 'f': | |
57 | file = optarg; | |
58 | break; | |
59 | case 's': | |
60 | value = optarg; | |
61 | break; | |
62 | case 'h': | |
63 | usage(stdout); | |
64 | exit(0); | |
65 | default: | |
66 | usage(stderr); | |
67 | exit(1); | |
68 | } | |
69 | } | |
70 | if(optind < argc) { | |
71 | if(chdir(argv[optind])) { | |
72 | fprintf(stderr, "nextep: %s: %s\n", argv[optind], strerror(errno)); | |
73 | exit(1); | |
74 | } | |
75 | optind++; | |
76 | } | |
77 | if(!getcwd(dbuf, sizeof(dbuf))) { | |
78 | fprintf(stderr, "nextep: getcwd: %s\n", strerror(errno)); | |
79 | exit(1); | |
80 | } | |
81 | dir = basename(dbuf); | |
82 | if((p = getenv("HOME")) == NULL) { | |
83 | fprintf(stderr, "nextep: $HOME is not set\n"); | |
84 | exit(1); | |
85 | } | |
86 | snprintf(buf, sizeof(buf), "%s/.nextep", p); | |
87 | snprintf(base, sizeof(base), "%s/%s", buf, dir); | |
b2fa28e3 FT |
88 | snprintf(fpath, sizeof(fpath), "%s/%s", base, file); |
89 | if(value == NULL) { | |
90 | if((fp = fopen(fpath, "r")) == NULL) { | |
91 | if(errno != ENOENT) { | |
92 | fprintf(stderr, "nextep: %s: %s\n", fpath, strerror(errno)); | |
93 | exit(1); | |
94 | } | |
95 | } else { | |
96 | while(fgets(buf, sizeof(buf), fp) != NULL) | |
97 | printf(buf); | |
98 | fclose(fp); | |
99 | } | |
100 | } else if(!*value) { | |
101 | if(unlink(fpath) && (errno != ENOENT)) { | |
102 | fprintf(stderr, "nextep: %s: %s\n", fpath, strerror(errno)); | |
103 | exit(1); | |
104 | } | |
1bed4569 | 105 | checkempty(base); |
b2fa28e3 | 106 | } else { |
f2bcbba7 FT |
107 | if(ensuredir(buf, base)) { |
108 | fprintf(stderr, "nextep: %s: %s\n", base, strerror(errno)); | |
109 | exit(1); | |
110 | } | |
b2fa28e3 FT |
111 | if((fp = fopen(fpath, "w")) == NULL) { |
112 | fprintf(stderr, "nextep: %s: %s\n", fpath, strerror(errno)); | |
113 | exit(1); | |
114 | } | |
115 | fprintf(fp, "%s\n", value); | |
116 | fclose(fp); | |
117 | } | |
118 | return(0); | |
119 | } | |
120 | ||
121 | /* | |
122 | * Local Variables: | |
123 | * compile-command: "gcc -Wall -g -o nextep nextep.c" | |
124 | * End: | |
125 | */ |