+ if (flags & GLOB_BRACE)
+ return globexp1(patbuf, pglob);
+ else
+ return glob0(patbuf, pglob);
+}
+
+/*
+ * Expand recursively a glob {} pattern. When there is no more expansion
+ * invoke the standard globbing routine to glob the rest of the magic
+ * characters
+ */
+static int globexp1(pattern, pglob)
+ const Char *pattern;
+ glob_t *pglob;
+{
+ const Char* ptr = pattern;
+ int rv;
+
+ /* Protect a single {}, for find(1), like csh */
+ if (pattern[0] == LBRACE && pattern[1] == RBRACE && pattern[2] == EOS)
+ return glob0(pattern, pglob);
+
+ while ((ptr = (const Char *) g_strchr((Char *) ptr, LBRACE)) != NULL)
+ if (!globexp2(ptr, pattern, pglob, &rv))
+ return rv;
+
+ return glob0(pattern, pglob);
+}
+
+
+/*
+ * Recursive brace globbing helper. Tries to expand a single brace.
+ * If it succeeds then it invokes globexp1 with the new pattern.
+ * If it fails then it tries to glob the rest of the pattern and returns.
+ */
+static int globexp2(ptr, pattern, pglob, rv)
+ const Char *ptr, *pattern;
+ glob_t *pglob;
+ int *rv;
+{
+ int i;
+ Char *lm, *ls;
+ const Char *pe, *pm, *pl;
+ Char patbuf[MAXPATHLEN + 1];
+
+ /* copy part up to the brace */
+ for (lm = patbuf, pm = pattern; pm != ptr; *lm++ = *pm++)
+ continue;
+ ls = lm;
+
+ /* Find the balanced brace */
+ for (i = 0, pe = ++ptr; *pe; pe++)
+ if (*pe == LBRACKET) {
+ /* Ignore everything between [] */
+ for (pm = pe++; *pe != RBRACKET && *pe != EOS; pe++)
+ continue;
+ if (*pe == EOS) {
+ /*
+ * We could not find a matching RBRACKET.
+ * Ignore and just look for RBRACE
+ */
+ pe = pm;
+ }
+ }
+ else if (*pe == LBRACE)
+ i++;
+ else if (*pe == RBRACE) {
+ if (i == 0)
+ break;
+ i--;
+ }
+
+ /* Non matching braces; just glob the pattern */
+ if (i != 0 || *pe == EOS) {
+ *rv = glob0(patbuf, pglob);
+ return 0;
+ }
+
+ for (i = 0, pl = pm = ptr; pm <= pe; pm++)
+ switch (*pm) {
+ case LBRACKET:
+ /* Ignore everything between [] */
+ for (pl = pm++; *pm != RBRACKET && *pm != EOS; pm++)
+ continue;
+ if (*pm == EOS) {
+ /*
+ * We could not find a matching RBRACKET.
+ * Ignore and just look for RBRACE
+ */
+ pm = pl;
+ }
+ break;
+
+ case LBRACE:
+ i++;
+ break;
+
+ case RBRACE:
+ if (i) {
+ i--;
+ break;
+ }
+ /* FALLTHROUGH */
+ case COMMA:
+ if (i && *pm == COMMA)
+ break;
+ else {
+ /* Append the current string */
+ for (lm = ls; (pl < pm); *lm++ = *pl++)
+ continue;
+ /*
+ * Append the rest of the pattern after the
+ * closing brace
+ */
+ for (pl = pe + 1; (*lm++ = *pl++) != EOS;)
+ continue;
+
+ /* Expand the current pattern */
+#ifdef DEBUG
+ qprintf("globexp2:", patbuf);
+#endif
+ *rv = globexp1(patbuf, pglob);
+
+ /* move after the comma, to the next string */
+ pl = pm + 1;
+ }
+ break;
+
+ default:
+ break;
+ }
+ *rv = 0;
+ return 0;
+}
+
+
+
+/*
+ * expand tilde from the passwd file.
+ */
+static const Char *
+globtilde(pattern, patbuf, pglob)
+ const Char *pattern;
+ Char *patbuf;
+ glob_t *pglob;
+{
+ struct passwd *pwd;
+ char *h;
+ const Char *p;
+ Char *b;
+
+ if (*pattern != TILDE || !(pglob->gl_flags & GLOB_TILDE))
+ return pattern;
+
+ /* Copy up to the end of the string or / */
+ for (p = pattern + 1, h = (char *) patbuf; *p && *p != SLASH;
+ *h++ = *p++)
+ continue;
+
+ *h = EOS;
+
+ if (((char *) patbuf)[0] == EOS) {
+ /*
+ * handle a plain ~ or ~/ by expanding $HOME
+ * first and then trying the password file
+ */
+ if ((h = getenv("HOME")) == NULL) {
+ if ((pwd = getpwuid(getuid())) == NULL)
+ return pattern;
+ else
+ h = pwd->pw_dir;
+ }
+ }
+ else {
+ /*
+ * Expand a ~user
+ */
+ if ((pwd = getpwnam((char*) patbuf)) == NULL)
+ return pattern;
+ else
+ h = pwd->pw_dir;
+ }
+
+ /* Copy the home directory */
+ for (b = patbuf; *h; *b++ = *h++)
+ continue;
+
+ /* Append the rest of the pattern */
+ while ((*b++ = *p++) != EOS)
+ continue;
+
+ return patbuf;
+}
+
+
+/*
+ * The main glob() routine: compiles the pattern (optionally processing
+ * quotes), calls glob1() to do the real pattern matching, and finally
+ * sorts the list (unless unsorted operation is requested). Returns 0
+ * if things went well, nonzero if errors occurred. It is not an error
+ * to find no matches.
+ */
+static int
+glob0(pattern, pglob)
+ const Char *pattern;
+ glob_t *pglob;
+{
+ const Char *qpatnext;
+ int c, err, oldpathc;
+ Char *bufnext, patbuf[MAXPATHLEN+1];
+
+ qpatnext = globtilde(pattern, patbuf, pglob);
+
+ oldpathc = pglob->gl_pathc;
+ pglob->gl_matchc = 0;
+
projects / unix-history / blobdiff