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-rw-r--r--ncurses-5.9/form/fty_enum.c442
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diff --git a/ncurses-5.9/form/fty_enum.c b/ncurses-5.9/form/fty_enum.c
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+/****************************************************************************
+ * Copyright (c) 1998-2009,2010 Free Software Foundation, Inc. *
+ * *
+ * Permission is hereby granted, free of charge, to any person obtaining a *
+ * copy of this software and associated documentation files (the *
+ * "Software"), to deal in the Software without restriction, including *
+ * without limitation the rights to use, copy, modify, merge, publish, *
+ * distribute, distribute with modifications, sublicense, and/or sell *
+ * copies of the Software, and to permit persons to whom the Software is *
+ * furnished to do so, subject to the following conditions: *
+ * *
+ * The above copyright notice and this permission notice shall be included *
+ * in all copies or substantial portions of the Software. *
+ * *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
+ * *
+ * Except as contained in this notice, the name(s) of the above copyright *
+ * holders shall not be used in advertising or otherwise to promote the *
+ * sale, use or other dealings in this Software without prior written *
+ * authorization. *
+ ****************************************************************************/
+
+/***************************************************************************
+* *
+* Author : Juergen Pfeifer *
+* *
+***************************************************************************/
+
+#include "form.priv.h"
+
+MODULE_ID("$Id$")
+
+typedef struct
+ {
+ char **kwds;
+ int count;
+ bool checkcase;
+ bool checkunique;
+ }
+enumARG;
+
+typedef struct
+ {
+ char **kwds;
+ int ccase;
+ int cunique;
+ }
+enumParams;
+
+/*---------------------------------------------------------------------------
+| Facility : libnform
+| Function : static void *Generic_Enum_Type(void * arg)
+|
+| Description : Allocate structure for enumeration type argument.
+|
+| Return Values : Pointer to argument structure or NULL on error
++--------------------------------------------------------------------------*/
+static void *
+Generic_Enum_Type(void *arg)
+{
+ enumARG *argp = (enumARG *)0;
+ enumParams *params = (enumParams *) arg;
+
+ if (params)
+ {
+ argp = typeMalloc(enumARG, 1);
+
+ if (argp)
+ {
+ int cnt = 0;
+ char **kp = (char **)0;
+ char **kwds = (char **)0;
+ char **kptarget;
+ int ccase, cunique;
+
+ T((T_CREATE("enumARG %p"), (void *)argp));
+ kwds = params->kwds;
+ ccase = params->ccase;
+ cunique = params->cunique;
+
+ argp->checkcase = ccase ? TRUE : FALSE;
+ argp->checkunique = cunique ? TRUE : FALSE;
+ argp->kwds = (char **)0;
+
+ kp = kwds;
+ while (kp && (*kp++))
+ cnt++;
+ argp->count = cnt;
+
+ if (cnt > 0)
+ {
+ /* We copy the keywords, because we can't rely on the fact
+ that the caller doesn't relocate or free the memory used
+ for the keywords (maybe he has GC)
+ */
+ argp->kwds = typeMalloc(char *, cnt + 1);
+
+ kp = kwds;
+ if ((kptarget = argp->kwds) != 0)
+ {
+ while (kp && (*kp))
+ {
+ (*kptarget++) = strdup(*kp++);
+ }
+ *kptarget = (char *)0;
+ }
+ }
+ }
+ }
+ return (void *)argp;
+}
+
+/*---------------------------------------------------------------------------
+| Facility : libnform
+| Function : static void *Make_Enum_Type( va_list * ap )
+|
+| Description : Allocate structure for enumeration type argument.
+|
+| Return Values : Pointer to argument structure or NULL on error
++--------------------------------------------------------------------------*/
+static void *
+Make_Enum_Type(va_list *ap)
+{
+ enumParams params;
+
+ params.kwds = va_arg(*ap, char **);
+ params.ccase = va_arg(*ap, int);
+ params.cunique = va_arg(*ap, int);
+
+ return Generic_Enum_Type((void *)&params);
+}
+
+/*---------------------------------------------------------------------------
+| Facility : libnform
+| Function : static void *Copy_Enum_Type( const void * argp )
+|
+| Description : Copy structure for enumeration type argument.
+|
+| Return Values : Pointer to argument structure or NULL on error.
++--------------------------------------------------------------------------*/
+static void *
+Copy_Enum_Type(const void *argp)
+{
+ enumARG *result = (enumARG *)0;
+
+ if (argp)
+ {
+ const enumARG *ap = (const enumARG *)argp;
+
+ result = typeMalloc(enumARG, 1);
+
+ if (result)
+ {
+ T((T_CREATE("enumARG %p"), (void *)result));
+ *result = *ap;
+
+ if (ap->count > 0)
+ {
+ char **kptarget;
+ char **kp = ap->kwds;
+ result->kwds = typeMalloc(char *, 1 + ap->count);
+
+ if ((kptarget = result->kwds) != 0)
+ {
+ while (kp && (*kp))
+ {
+ (*kptarget++) = strdup(*kp++);
+ }
+ *kptarget = (char *)0;
+ }
+ }
+ }
+ }
+ return (void *)result;
+}
+
+/*---------------------------------------------------------------------------
+| Facility : libnform
+| Function : static void Free_Enum_Type( void * argp )
+|
+| Description : Free structure for enumeration type argument.
+|
+| Return Values : -
++--------------------------------------------------------------------------*/
+static void
+Free_Enum_Type(void *argp)
+{
+ if (argp)
+ {
+ const enumARG *ap = (const enumARG *)argp;
+
+ if (ap->kwds && ap->count > 0)
+ {
+ char **kp = ap->kwds;
+ int cnt = 0;
+
+ while (kp && (*kp))
+ {
+ free(*kp++);
+ cnt++;
+ }
+ assert(cnt == ap->count);
+ free(ap->kwds);
+ }
+ free(argp);
+ }
+}
+
+#define SKIP_SPACE(x) while(((*(x))!='\0') && (is_blank(*(x)))) (x)++
+#define NOMATCH 0
+#define PARTIAL 1
+#define EXACT 2
+
+/*---------------------------------------------------------------------------
+| Facility : libnform
+| Function : static int Compare(const unsigned char * s,
+| const unsigned char * buf,
+| bool ccase )
+|
+| Description : Check whether or not the text in 'buf' matches the
+| text in 's', at least partial.
+|
+| Return Values : NOMATCH - buffer doesn't match
+| PARTIAL - buffer matches partially
+| EXACT - buffer matches exactly
++--------------------------------------------------------------------------*/
+static int
+Compare(const unsigned char *s, const unsigned char *buf,
+ bool ccase)
+{
+ SKIP_SPACE(buf); /* Skip leading spaces in both texts */
+ SKIP_SPACE(s);
+
+ if (*buf == '\0')
+ {
+ return (((*s) != '\0') ? NOMATCH : EXACT);
+ }
+ else
+ {
+ if (ccase)
+ {
+ while (*s++ == *buf)
+ {
+ if (*buf++ == '\0')
+ return EXACT;
+ }
+ }
+ else
+ {
+ while (toupper(*s++) == toupper(*buf))
+ {
+ if (*buf++ == '\0')
+ return EXACT;
+ }
+ }
+ }
+ /* At this location buf points to the first character where it no longer
+ matches with s. So if only blanks are following, we have a partial
+ match otherwise there is no match */
+ SKIP_SPACE(buf);
+ if (*buf)
+ return NOMATCH;
+
+ /* If it happens that the reference buffer is at its end, the partial
+ match is actually an exact match. */
+ return ((s[-1] != '\0') ? PARTIAL : EXACT);
+}
+
+/*---------------------------------------------------------------------------
+| Facility : libnform
+| Function : static bool Check_Enum_Field(
+| FIELD * field,
+| const void * argp)
+|
+| Description : Validate buffer content to be a valid enumeration value
+|
+| Return Values : TRUE - field is valid
+| FALSE - field is invalid
++--------------------------------------------------------------------------*/
+static bool
+Check_Enum_Field(FIELD *field, const void *argp)
+{
+ char **kwds = ((const enumARG *)argp)->kwds;
+ bool ccase = ((const enumARG *)argp)->checkcase;
+ bool unique = ((const enumARG *)argp)->checkunique;
+ unsigned char *bp = (unsigned char *)field_buffer(field, 0);
+ char *s, *t, *p;
+ int res;
+
+ while (kwds && (s = (*kwds++)))
+ {
+ if ((res = Compare((unsigned char *)s, bp, ccase)) != NOMATCH)
+ {
+ p = t = s; /* t is at least a partial match */
+ if ((unique && res != EXACT))
+ {
+ while (kwds && (p = *kwds++))
+ {
+ if ((res = Compare((unsigned char *)p, bp, ccase)) != NOMATCH)
+ {
+ if (res == EXACT)
+ {
+ t = p;
+ break;
+ }
+ else
+ t = (char *)0;
+ }
+ }
+ }
+ if (t)
+ {
+ set_field_buffer(field, 0, t);
+ return TRUE;
+ }
+ if (!p)
+ break;
+ }
+ }
+ return FALSE;
+}
+
+static const char *dummy[] =
+{(char *)0};
+
+/*---------------------------------------------------------------------------
+| Facility : libnform
+| Function : static bool Next_Enum(FIELD * field,
+| const void * argp)
+|
+| Description : Check for the next enumeration value
+|
+| Return Values : TRUE - next value found and loaded
+| FALSE - no next value loaded
++--------------------------------------------------------------------------*/
+static bool
+Next_Enum(FIELD *field, const void *argp)
+{
+ const enumARG *args = (const enumARG *)argp;
+ char **kwds = args->kwds;
+ bool ccase = args->checkcase;
+ int cnt = args->count;
+ unsigned char *bp = (unsigned char *)field_buffer(field, 0);
+
+ if (kwds)
+ {
+ while (cnt--)
+ {
+ if (Compare((unsigned char *)(*kwds++), bp, ccase) == EXACT)
+ break;
+ }
+ if (cnt <= 0)
+ kwds = args->kwds;
+ if ((cnt >= 0) || (Compare((const unsigned char *)dummy, bp, ccase) == EXACT))
+ {
+ set_field_buffer(field, 0, *kwds);
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+
+/*---------------------------------------------------------------------------
+| Facility : libnform
+| Function : static bool Previous_Enum(
+| FIELD * field,
+| const void * argp)
+|
+| Description : Check for the previous enumeration value
+|
+| Return Values : TRUE - previous value found and loaded
+| FALSE - no previous value loaded
++--------------------------------------------------------------------------*/
+static bool
+Previous_Enum(FIELD *field, const void *argp)
+{
+ const enumARG *args = (const enumARG *)argp;
+ int cnt = args->count;
+ char **kwds = &args->kwds[cnt - 1];
+ bool ccase = args->checkcase;
+ unsigned char *bp = (unsigned char *)field_buffer(field, 0);
+
+ if (kwds)
+ {
+ while (cnt--)
+ {
+ if (Compare((unsigned char *)(*kwds--), bp, ccase) == EXACT)
+ break;
+ }
+
+ if (cnt <= 0)
+ kwds = &args->kwds[args->count - 1];
+
+ if ((cnt >= 0) || (Compare((const unsigned char *)dummy, bp, ccase) == EXACT))
+ {
+ set_field_buffer(field, 0, *kwds);
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+
+static FIELDTYPE typeENUM =
+{
+ _HAS_ARGS | _HAS_CHOICE | _RESIDENT,
+ 1, /* this is mutable, so we can't be const */
+ (FIELDTYPE *)0,
+ (FIELDTYPE *)0,
+ Make_Enum_Type,
+ Copy_Enum_Type,
+ Free_Enum_Type,
+ INIT_FT_FUNC(Check_Enum_Field),
+ INIT_FT_FUNC(NULL),
+ INIT_FT_FUNC(Next_Enum),
+ INIT_FT_FUNC(Previous_Enum),
+#if NCURSES_INTEROP_FUNCS
+ Generic_Enum_Type
+#endif
+};
+
+NCURSES_EXPORT_VAR(FIELDTYPE *)
+TYPE_ENUM = &typeENUM;
+
+#if NCURSES_INTEROP_FUNCS
+/* The next routines are to simplify the use of ncurses from
+ programming languages with restictions on interop with C level
+ constructs (e.g. variable access or va_list + ellipsis constructs)
+*/
+NCURSES_EXPORT(FIELDTYPE *)
+_nc_TYPE_ENUM(void)
+{
+ return TYPE_ENUM;
+}
+#endif
+
+/* fty_enum.c ends here */
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