SYSV-style form library; from ncurses

1 files changed, 153 insertions, 0 deletions

diff --git a/lib/libform/fty_int.c b/lib/libform/fty_int.c
new file mode 100644
index 00000000000..8a713b45f74
--- /dev/null
+++ b/lib/libform/fty_int.c
@@ -0,0 +1,153 @@
+
+/*
+ * 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.
+ */
+
+#include "form.priv.h"
+
+typedef struct {
+  int precision;
+  int low;
+  int high;
+} integerARG;
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnform  
+|   Function      :  static void *Make_Integer_Type( va_list * ap )
+|   
+|   Description   :  Allocate structure for integer type argument.
+|
+|   Return Values :  Pointer to argument structure or NULL on error
++--------------------------------------------------------------------------*/
+static void *Make_Integer_Type(va_list * ap)
+{
+  integerARG *argp = (integerARG *)malloc(sizeof(integerARG));
+
+  if (argp)
+    {
+      argp->precision = va_arg(*ap,int);
+      argp->low       = va_arg(*ap,int);
+      argp->high      = va_arg(*ap,int);
+    }
+  return (void *)argp;
+}
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnform  
+|   Function      :  static void *Copy_Integer_Type(const void * argp)
+|   
+|   Description   :  Copy structure for integer type argument.  
+|
+|   Return Values :  Pointer to argument structure or NULL on error.
++--------------------------------------------------------------------------*/
+static void *Copy_Integer_Type(const void * argp)
+{
+  integerARG *ap  = (integerARG *)argp;
+  integerARG *new = (integerARG *)0;
+
+  if (argp)
+    {
+      new = (integerARG *)malloc(sizeof(integerARG));
+      if (new)
+	*new = *ap;
+    }
+  return (void *)new;
+}
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnform  
+|   Function      :  static void Free_Integer_Type(void * argp)
+|   
+|   Description   :  Free structure for integer type argument.
+|
+|   Return Values :  -
++--------------------------------------------------------------------------*/
+static void Free_Integer_Type(void * argp)
+{
+  if (argp) 
+    free(argp);
+}
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnform  
+|   Function      :  static bool Check_Integer_Field(
+|                                                    FIELD * field,
+|                                                    const void * argp)
+|   
+|   Description   :  Validate buffer content to be a valid integer value
+|
+|   Return Values :  TRUE  - field is valid
+|                    FALSE - field is invalid
++--------------------------------------------------------------------------*/
+static bool Check_Integer_Field(FIELD * field, const void * argp)
+{
+  integerARG *argi  = (integerARG *)argp;
+  int low           = argi->low;
+  int high          = argi->high;
+  int prec          = argi->precision;
+  unsigned char *bp = (unsigned char *)field_buffer(field,0);
+  char *s           = (char *)bp;
+  long val;
+  char buf[100];
+
+  while( *bp && *bp==' ') bp++;
+  if (*bp)
+    {
+      if (*bp=='-') bp++;
+      while (*bp)
+	{
+	  if (!isdigit(*bp)) break;
+	  bp++;
+	}
+      while(*bp && *bp==' ') bp++;
+      if (*bp=='\0')
+	{
+	  val = atol(s);
+	  if (low<high)
+	    {
+	      if (val<low || val>high) return FALSE;
+	    }
+	  sprintf(buf,"%.*ld",prec,val);
+	  set_field_buffer(field,0,buf);
+	  return TRUE;
+	}
+    }
+  return FALSE;
+}
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnform  
+|   Function      :  static bool Check_Integer_Character(
+|                                      int c,
+|                                      const void * argp)
+|   
+|   Description   :  Check a character for the integer type.
+|
+|   Return Values :  TRUE  - character is valid
+|                    FALSE - character is invalid
++--------------------------------------------------------------------------*/
+static bool Check_Integer_Character(int c, const void * argp)
+{
+  return ((isdigit(c) || (c=='-')) ? TRUE : FALSE);
+}
+
+static FIELDTYPE typeINTEGER = {
+  _HAS_ARGS | _RESIDENT,
+  1,                           /* this is mutable, so we can't be const */
+  (FIELDTYPE *)0,
+  (FIELDTYPE *)0,
+  Make_Integer_Type,
+  Copy_Integer_Type,
+  Free_Integer_Type,
+  Check_Integer_Field,
+  Check_Integer_Character,
+  NULL,
+  NULL
+};
+
+FIELDTYPE* TYPE_INTEGER = &typeINTEGER;
+
+/* fty_int.c ends here */