Infrastructure: Split the files into subdirectories.

[mLib] / ui / pquis.c

diff --git a/ui/pquis.c b/ui/pquis.c
new file mode 100644 (file)
index 0000000..00b738e
--- /dev/null
+++ b/ui/pquis.c
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+/* -*-c-*-
+ *
+ * Print strings, substituting the program name
+ *
+ * (c) 1999 Straylight/Edgeware
+ */
+
+/*----- Licensing notice --------------------------------------------------*
+ *
+ * This file is part of the mLib utilities library.
+ *
+ * mLib is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * mLib is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with mLib; if not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+/*----- Header files ------------------------------------------------------*/
+
+#include <stdio.h>
+#include <string.h>
+
+#include "quis.h"
+
+/*----- Main code ---------------------------------------------------------*/
+
+/* --- @pquis@ --- *
+ *
+ * Arguments:  @FILE *fp@ = output stream to write on
+ *             @const char *p@ = pointer to string to write
+ *
+ * Returns:    Zero if everything worked, EOF if not.
+ *
+ * Use:                Writes the string @p@ to the output stream @fp@.  Occurrences
+ *             of the character `$' in @p@ are replaced by the program name
+ *             as reported by @quis@.  A `$$' is replaced by a single `$'
+ *             sign.
+ */
+
+int pquis(FILE *fp, const char *p)
+{
+  size_t sz;
+
+  while (*p) {
+    sz = strcspn(p, "$");
+    if (sz) {
+      if (fwrite(p, 1, sz, fp) < sz)
+       return (EOF);
+      p += sz;
+    }
+    if (*p == '$') {
+      p++;
+      if (*p == '$') {
+       if (fputc('$', fp) == EOF)
+         return (EOF);
+       p++;
+      } else {
+       if (fputs(pn__name, fp) == EOF)
+         return (EOF);
+      }
+    }
+  }
+  return (0);
+}
+
+/*----- That's all, folks -------------------------------------------------*/