diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/commas.c | 99 | ||||
| -rw-r--r-- | lib/getmountlist.c | 93 | ||||
| -rw-r--r-- | lib/lib.h | 14 |
3 files changed, 107 insertions, 99 deletions
diff --git a/lib/commas.c b/lib/commas.c new file mode 100644 index 00000000..03b2e345 --- /dev/null +++ b/lib/commas.c @@ -0,0 +1,99 @@ +/* commas.c - Deal with comma separated lists + * + * Copyright 2018 Rob Landley <rob@landley.net> + */ + +#include "toys.h" + +// Traverse arg_list of csv, calling callback on each value +void comma_args(struct arg_list *al, void *data, char *err, + char *(*callback)(void *data, char *str, int len)) +{ + char *next, *arg; + int len; + + if (CFG_TOYBOX_DEBUG && !err) err = "INTERNAL"; + + while (al) { + arg = al->arg; + while ((next = comma_iterate(&arg, &len))) + if ((next = callback(data, next, len))) + error_exit("%s '%s'\n%*c", err, al->arg, + (int)(5+strlen(toys.which->name)+strlen(err)+next-al->arg), '^'); + al = al->next; + } +} + +// Realloc *old with oldstring,newstring + +void comma_collate(char **old, char *new) +{ + char *temp, *atold = *old; + + // Only add a comma if old string didn't end with one + if (atold && *atold) { + char *comma = ","; + + if (atold[strlen(atold)-1] == ',') comma = ""; + temp = xmprintf("%s%s%s", atold, comma, new); + } else temp = xstrdup(new); + free (atold); + *old = temp; +} + +// iterate through strings in a comma separated list. +// returns start of next entry or NULL if none +// sets *len to length of entry (not including comma) +// advances *list to start of next entry +char *comma_iterate(char **list, int *len) +{ + char *start = *list, *end; + + if (!*list || !**list) return 0; + + if (!(end = strchr(*list, ','))) { + *len = strlen(*list); + *list = 0; + } else *list += (*len = end-start)+1; + + return start; +} + +// check all instances of opt and "no"opt in optlist, return true if opt +// found and last instance wasn't no. If clean, remove each instance from list. +int comma_scan(char *optlist, char *opt, int clean) +{ + int optlen = strlen(opt), len, no, got = 0; + + if (optlist) for (;;) { + char *s = comma_iterate(&optlist, &len); + + if (!s) break; + no = 2*(*s == 'n' && s[1] == 'o'); + if (optlen == len-no && !strncmp(opt, s+no, optlen)) { + got = !no; + if (clean) { + if (optlist) memmove(s, optlist, strlen(optlist)+1); + else *s = 0; + } + } + } + + return got; +} + +// return true if all scanlist options enabled in optlist +int comma_scanall(char *optlist, char *scanlist) +{ + int i = 1; + + while (scanlist && *scanlist) { + char *opt = comma_iterate(&scanlist, &i), *s = xstrndup(opt, i); + + i = comma_scan(optlist, s, 0); + free(s); + if (!i) break; + } + + return i; +} diff --git a/lib/getmountlist.c b/lib/getmountlist.c index f7d58ab6..791636fb 100644 --- a/lib/getmountlist.c +++ b/lib/getmountlist.c @@ -6,60 +6,6 @@ #include "toys.h" #include <mntent.h> -// Traverse arg_list of csv, calling callback on each value -void comma_args(struct arg_list *al, void *data, char *err, - char *(*callback)(void *data, char *str, int len)) -{ - char *next, *arg; - int len; - - if (CFG_TOYBOX_DEBUG && !err) err = "INTERNAL"; - - while (al) { - arg = al->arg; - while ((next = comma_iterate(&arg, &len))) - if ((next = callback(data, next, len))) - error_exit("%s '%s'\n%*c", err, al->arg, - (int)(5+strlen(toys.which->name)+strlen(err)+next-al->arg), '^'); - al = al->next; - } -} - -// Realloc *old with oldstring,newstring - -void comma_collate(char **old, char *new) -{ - char *temp, *atold = *old; - - // Only add a comma if old string didn't end with one - if (atold && *atold) { - char *comma = ","; - - if (atold[strlen(atold)-1] == ',') comma = ""; - temp = xmprintf("%s%s%s", atold, comma, new); - } else temp = xstrdup(new); - free (atold); - *old = temp; -} - -// iterate through strings in a comma separated list. -// returns start of next entry or NULL if none -// sets *len to length of entry (not including comma) -// advances *list to start of next entry -char *comma_iterate(char **list, int *len) -{ - char *start = *list, *end; - - if (!*list || !**list) return 0; - - if (!(end = strchr(*list, ','))) { - *len = strlen(*list); - *list = 0; - } else *list += (*len = end-start)+1; - - return start; -} - static void octal_deslash(char *s) { char *o = s; @@ -84,45 +30,6 @@ static void octal_deslash(char *s) *o = 0; } -// check all instances of opt and "no"opt in optlist, return true if opt -// found and last instance wasn't no. If clean, remove each instance from list. -int comma_scan(char *optlist, char *opt, int clean) -{ - int optlen = strlen(opt), len, no, got = 0; - - if (optlist) for (;;) { - char *s = comma_iterate(&optlist, &len); - - if (!s) break; - no = 2*(*s == 'n' && s[1] == 'o'); - if (optlen == len-no && !strncmp(opt, s+no, optlen)) { - got = !no; - if (clean) { - if (optlist) memmove(s, optlist, strlen(optlist)+1); - else *s = 0; - } - } - } - - return got; -} - -// return true if all scanlist options enabled in optlist -int comma_scanall(char *optlist, char *scanlist) -{ - int i = 1; - - while (scanlist && *scanlist) { - char *opt = comma_iterate(&scanlist, &i), *s = xstrndup(opt, i); - - i = comma_scan(optlist, s, 0); - free(s); - if (!i) break; - } - - return i; -} - // Check if this type matches list. // Odd syntax: typelist all yes = if any, typelist all no = if none. @@ -300,6 +300,14 @@ char *ntop(struct sockaddr *sa); // password.c int get_salt(char *salt, char * algo); +// commas.c +void comma_args(struct arg_list *al, void *data, char *err, + char *(*callback)(void *data, char *str, int len)); +void comma_collate(char **old, char *new); +char *comma_iterate(char **list, int *len); +int comma_scan(char *optlist, char *opt, int clean); +int comma_scanall(char *optlist, char *scanlist); + // getmountlist.c struct mtab_list { struct mtab_list *next, *prev; @@ -311,12 +319,6 @@ struct mtab_list { char type[0]; }; -void comma_args(struct arg_list *al, void *data, char *err, - char *(*callback)(void *data, char *str, int len)); -void comma_collate(char **old, char *new); -char *comma_iterate(char **list, int *len); -int comma_scan(char *optlist, char *opt, int clean); -int comma_scanall(char *optlist, char *scanlist); int mountlist_istype(struct mtab_list *ml, char *typelist); struct mtab_list *xgetmountlist(char *path); |