diff options
Diffstat (limited to 'toys/pending/sh.c')
| -rw-r--r-- | toys/pending/sh.c | 89 |
1 files changed, 54 insertions, 35 deletions
diff --git a/toys/pending/sh.c b/toys/pending/sh.c index 9b3f6445..3e809425 100644 --- a/toys/pending/sh.c +++ b/toys/pending/sh.c @@ -814,21 +814,7 @@ char *getvar_special(char *str, int len, int *used, struct arg_list **delete) return s; } -// Copy string until } including escaped } -char *slashcopy(char *s, char c) -{ - char *ss; - int ii, jj; - - for (ii = 0; s[ii] != c; ii++) if (s[ii] == '\\') ii++; - ss = xmalloc(ii+1); - for (ii = jj = 0; s[jj] != c; ii++) - if ('\\'==(ss[ii] = s[jj++])) ss[ii] = s[jj++]; - ss[ii] = 0; - - return ss; -} - +// Return length of utf8 char @s fitting in len, writing value into *cc int getutf8(char *s, int len, int *cc) { wchar_t wc; @@ -914,9 +900,9 @@ static int wildcard_match(char *str, int len, char *pattern, int plen, // TODO: seek to next | in paren while (ant.c) { if ((c = pattern[(long)deck->v[--dd]])=='*') { - if (len<(ss = (long)ant.v[ant.c-2]+ (long)++ant.v[ant.c-1])) ant.c -= 2; + if (len<(ss = (long)ant.v[ant.c-2]+(long)++ant.v[ant.c-1])) ant.c -= 2; else { - dd++; + pp = (long)deck->v[dd++]+1; break; } } else if (c == '(') dprintf(2, "TODO: ("); @@ -930,18 +916,19 @@ static int wildcard_match(char *str, int len, char *pattern, int plen, } // Skip to next slash in wildcard path. Needs deck to know what [ranges] to skip -char *wildcard_skipslash(char *pattern, struct sh_arg *deck, int *doff) +// idx = pointer to index in deck, updated as we pass wildcards +char *wildcard_skipslash(char *pattern, struct sh_arg *deck, int *idx) { char *p; int i = 0; for (p = pattern; *p && *p!='/'; p++) { // Skip [] and nested () ranges within deck - if (*doff<deck->c && p-pattern == (long)deck->v[*doff]) { - ++*doff; - if (*p=='[') p = deck->v[(*doff)++]; - else if (*p=='(') while (*++p) if (p-pattern == (long)deck->v[*doff]) { - ++*doff; + if (*idx<deck->c && p-pattern == (long)deck->v[*idx]) { + ++*idx; + if (*p=='[') p = deck->v[(*idx)++]; + else if (*p=='(') while (*++p) if (p-pattern == (long)deck->v[*idx]) { + ++*idx; if (*p == ')') { if (!i) break; i--; @@ -966,7 +953,7 @@ int do_wildcard_files(struct dirtree *node) struct sh_arg ant; // Find active pattern range - for (nn = node, lvl = ll = 1;; lvl = ll, pattern = p) { + for (nn = node, lvl = ll = 0;; lvl = ll, pattern = p) { p = wildcard_skipslash(pattern, TT.wcdeck, &ll); if (lvl != ll && !(nn = nn->parent)) break; while (*p == '/') p++; @@ -1020,7 +1007,7 @@ static void collect_wildcards(char *new, long oo, struct sh_arg *deck) if (!cc) { long ii = 0, jj = 65535&*vv, kk; - for (*vv = 0, kk = deck->c; jj;) { + for (kk = deck->c; jj;) { if (')' == (cc = new[vv[--kk]])) ii++; else if ('(' == cc) { if (ii) ii--; @@ -1030,6 +1017,7 @@ static void collect_wildcards(char *new, long oo, struct sh_arg *deck) } } } + if (deck->c) memmove(vv, vv+1, sizeof(long)*deck->c--); return; } @@ -1074,10 +1062,11 @@ static void wildcard_add_files(struct sh_arg *arg, char *pattern, char *p, *pp; int lvl, ll; + collect_wildcards("", 0, deck); + // fast path: when no wildcards, add pattern verbatim - if (deck->c<2) return arg_add(arg, pattern); + if (!deck->c) return arg_add(arg, pattern); - if (*deck->v) collect_wildcards("", 0, deck); TT.wcdeck = deck; TT.wcpat = pattern; @@ -1107,9 +1096,28 @@ static void wildcard_add_files(struct sh_arg *arg, char *pattern, } while (dt && !dt->child); } + deck->c = 0; + // TODO: test .*/../ } +// Copy string until } including escaped } +char *slashcopy(char *s, char c, struct sh_arg *deck) +{ + char *ss; + int ii, jj; + + for (ii = 0; s[ii] != c; ii++) if (s[ii] == '\\') ii++; + ss = xmalloc(ii+1); + for (ii = jj = 0; s[jj] != c; ii++) + if ('\\'==(ss[ii] = s[jj++])) ss[ii] = s[jj++]; + else if (deck) collect_wildcards(ss, ii, deck); + ss[ii] = 0; + if (deck) collect_wildcards("", 0, deck); + + return ss; +} + #define NO_QUOTE (1<<0) // quote removal #define NO_PATH (1<<1) // path expansion (wildcards) #define NO_SPLIT (1<<2) // word splitting @@ -1333,6 +1341,9 @@ barf: } // combine before/ifs/after sections & split words on $IFS in ifs + // keep oo bytes of str before (already parsed) + // insert ifs (active for wildcards+splitting) + // keep str+ii after (still to parse) // Fetch separator to glue string back together with *sep = 0; @@ -1358,13 +1369,14 @@ barf: dd = slice[xx = (*slice == ':')]; if (!ifs || (xx && !*ifs)) { if (strchr("-?=", dd)) { // - use default = assign default ? error - push_arg(delete, ifs = slashcopy(slice+xx+1, '}')); + push_arg(delete, ifs = slashcopy(slice+xx+1, '}', 0)); if (dd == '?' || (dd == '=' && !(setvar(s = xmprintf("%.*s=%s", (int)(slice-ss), ss, ifs))))) goto barf; } // use alternate value - } else if (dd == '+') push_arg(delete, ifs = slashcopy(slice+xx+1,'}')); + } else if (dd == '+') + push_arg(delete, ifs = slashcopy(slice+xx+1, '}', 0)); else if (xx) { // ${x::} long long la, lb, lc; @@ -1400,14 +1412,24 @@ barf: for (dd = 0; dd<lb ; dd++) if (!(ifs[dd] = ifs[dd+la])) break; ifs[dd] = 0; } + // ${x#y} remove shortest prefix ${x##y} remove longest prefix + } else if (*slice=='#') { + struct sh_arg wild = {0}; + + s = slashcopy(slice+(xx = slice[1]=='#')+1, '}', &wild); + dd = wildcard_match(ifs, strlen(ifs), s, strlen(s), &wild, + WILD_SHORT*!xx); + free(s); + free(wild.v); + if (dd>0) ifs += dd; + +// TODO test x can be @ or * } else { // TODO test ${-abc} as error ifs = slice; goto barf; } -// ${x#y} remove shortest prefix ${x##y} remove longest prefix -// x can be @ or * // ${x%y} ${x%%y} suffix // ${x/pat/sub} substitute ${x//pat/sub} global ${x/#pat/sub} begin // ${x/%pat/sub} end ${x/pat} delete pat @@ -1493,10 +1515,7 @@ barf: fail: if (str != new) free(new); free(deck.v); - if (ant!=&deck && ant->v) { - collect_wildcards("", 0, ant); - memmove(ant->v, ant->v+1, ant->c--*sizeof(long)); - } + if (ant!=&deck && ant->v) collect_wildcards("", 0, ant); return !!arg; } |