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-rw-r--r--contrib/ncurses/form/fty_alnum.c137
1 files changed, 137 insertions, 0 deletions
diff --git a/contrib/ncurses/form/fty_alnum.c b/contrib/ncurses/form/fty_alnum.c
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index 000000000000..cb3909d7b1c7
--- /dev/null
+++ b/contrib/ncurses/form/fty_alnum.c
@@ -0,0 +1,137 @@
+
+/*
+ * THIS CODE IS SPECIFICALLY EXEMPTED FROM THE NCURSES PACKAGE COPYRIGHT.
+ * You may freely copy it for use as a template for your own field types.
+ * If you develop a field type that might be of general use, please send
+ * it back to the ncurses maintainers for inclusion in the next version.
+ */
+/***************************************************************************
+* *
+* Author : Juergen Pfeifer, juergen.pfeifer@gmx.net *
+* *
+***************************************************************************/
+
+#include "form.priv.h"
+
+MODULE_ID("$Id: fty_alnum.c,v 1.9 1999/05/16 17:22:49 juergen Exp $")
+
+typedef struct {
+ int width;
+} alnumARG;
+
+/*---------------------------------------------------------------------------
+| Facility : libnform
+| Function : static void *Make_AlphaNumeric_Type(va_list *ap)
+|
+| Description : Allocate structure for alphanumeric type argument.
+|
+| Return Values : Pointer to argument structure or NULL on error
++--------------------------------------------------------------------------*/
+static void *Make_AlphaNumeric_Type(va_list * ap)
+{
+ alnumARG *argp = (alnumARG *)malloc(sizeof(alnumARG));
+
+ if (argp)
+ argp->width = va_arg(*ap,int);
+
+ return ((void *)argp);
+}
+
+/*---------------------------------------------------------------------------
+| Facility : libnform
+| Function : static void *Copy_AlphaNumericType(const void *argp)
+|
+| Description : Copy structure for alphanumeric type argument.
+|
+| Return Values : Pointer to argument structure or NULL on error.
++--------------------------------------------------------------------------*/
+static void *Copy_AlphaNumeric_Type(const void *argp)
+{
+ const alnumARG *ap = (const alnumARG *)argp;
+ alnumARG *result = (alnumARG *)malloc(sizeof(alnumARG));
+
+ if (result)
+ *result = *ap;
+
+ return ((void *)result);
+}
+
+/*---------------------------------------------------------------------------
+| Facility : libnform
+| Function : static void Free_AlphaNumeric_Type(void *argp)
+|
+| Description : Free structure for alphanumeric type argument.
+|
+| Return Values : -
++--------------------------------------------------------------------------*/
+static void Free_AlphaNumeric_Type(void * argp)
+{
+ if (argp)
+ free(argp);
+}
+
+/*---------------------------------------------------------------------------
+| Facility : libnform
+| Function : static bool Check_AlphaNumeric_Field(
+| FIELD *field,
+| const void *argp)
+|
+| Description : Validate buffer content to be a valid alphanumeric value
+|
+| Return Values : TRUE - field is valid
+| FALSE - field is invalid
++--------------------------------------------------------------------------*/
+static bool Check_AlphaNumeric_Field(FIELD * field, const void * argp)
+{
+ int width = ((const alnumARG *)argp)->width;
+ unsigned char *bp = (unsigned char *)field_buffer(field,0);
+ int l = -1;
+ unsigned char *s;
+
+ while(*bp && *bp==' ')
+ bp++;
+ if (*bp)
+ {
+ s = bp;
+ while(*bp && isalnum(*bp))
+ bp++;
+ l = (int)(bp-s);
+ while(*bp && *bp==' ')
+ bp++;
+ }
+ return ((*bp || (l < width)) ? FALSE : TRUE);
+}
+
+/*---------------------------------------------------------------------------
+| Facility : libnform
+| Function : static bool Check_AlphaNumeric_Character(
+| int c,
+| const void *argp )
+|
+| Description : Check a character for the alphanumeric type.
+|
+| Return Values : TRUE - character is valid
+| FALSE - character is invalid
++--------------------------------------------------------------------------*/
+static bool Check_AlphaNumeric_Character(int c, const void * argp GCC_UNUSED)
+{
+ return (isalnum(c) ? TRUE : FALSE);
+}
+
+static FIELDTYPE typeALNUM = {
+ _HAS_ARGS | _RESIDENT,
+ 1, /* this is mutable, so we can't be const */
+ (FIELDTYPE *)0,
+ (FIELDTYPE *)0,
+ Make_AlphaNumeric_Type,
+ Copy_AlphaNumeric_Type,
+ Free_AlphaNumeric_Type,
+ Check_AlphaNumeric_Field,
+ Check_AlphaNumeric_Character,
+ NULL,
+ NULL
+};
+
+FIELDTYPE* TYPE_ALNUM = &typeALNUM;
+
+/* fty_alnum.c ends here */