--- /dev/null
+/*****************************************************************************/
+/* */
+/* attr.c */
+/* */
+/* Command line attributes */
+/* */
+/* */
+/* */
+/* (C) 2012, Ullrich von Bassewitz */
+/* Roemerstrasse 52 */
+/* D-70794 Filderstadt */
+/* EMail: uz@cc65.org */
+/* */
+/* */
+/* This software is provided 'as-is', without any expressed or implied */
+/* warranty. In no event will the authors be held liable for any damages */
+/* arising from the use of this software. */
+/* */
+/* Permission is granted to anyone to use this software for any purpose, */
+/* including commercial applications, and to alter it and redistribute it */
+/* freely, subject to the following restrictions: */
+/* */
+/* 1. The origin of this software must not be misrepresented; you must not */
+/* claim that you wrote the original software. If you use this software */
+/* in a product, an acknowledgment in the product documentation would be */
+/* appreciated but is not required. */
+/* 2. Altered source versions must be plainly marked as such, and must not */
+/* be misrepresented as being the original software. */
+/* 3. This notice may not be removed or altered from any source */
+/* distribution. */
+/* */
+/*****************************************************************************/
+
+
+
+#include <stdio.h>
+#include <string.h>
+
+/* common */
+#include "chartype.h"
+#include "strbuf.h"
+#include "xmalloc.h"
+
+/* sp65 */
+#include "attr.h"
+#include "error.h"
+
+
+
+/*****************************************************************************/
+/* Code */
+/*****************************************************************************/
+
+
+
+static int IsNumber (const char* Value)
+/* Check if Value is an integer number */
+{
+ if (*Value == '-' || *Value == '+') {
+ ++Value;
+ }
+ while (IsDigit (*Value)) {
+ ++Value;
+ }
+ return (*Value == '\0');
+}
+
+
+
+Attr* NewAttr (const char* Name, const char* Value)
+/* Create a new attribute */
+{
+ /* Determine the length of Value */
+ unsigned Len = strlen (Value);
+
+ /* Allocate memory */
+ Attr* A = xmalloc (sizeof (Attr) + Len);
+
+ /* Initialize the fields */
+ A->Flags = IsNumber (Value)? afInt : afNone;
+ A->Name = xstrdup (Name);
+ memcpy (A->Value, Value, Len + 1);
+
+ /* Return the new struct */
+ return A;
+}
+
+
+
+void DumpAttrColl (const Collection* C)
+/* Dump a collection of attribute/value pairs for debugging */
+{
+ unsigned I;
+ for (I = 0; I < CollCount (C); ++I) {
+ const Attr* A = CollConstAt (C, I);
+ printf ("%s=%s\n", A->Name, A->Value);
+ }
+}
+
+
+
+int FindAttr (const Collection* C, const char* Name, unsigned* Index)
+/* Search for an attribute with the given name in the collection. If it is
+ * found, the function returns true and Index contains the index of the
+ * entry. If Name isn't found, the function returns false and Index
+ * will contain the insert position.
+ */
+{
+ /* Do a binary search */
+ int Lo = 0;
+ int Hi = (int) CollCount (C) - 1;
+ while (Lo <= Hi) {
+
+ /* Mid of range */
+ int Cur = (Lo + Hi) / 2;
+
+ /* Get item */
+ const Attr* A = CollAt (C, Cur);
+
+ /* Compare */
+ int Res = strcmp (A->Name, Name);
+
+ /* Found? */
+ if (Res < 0) {
+ Lo = Cur + 1;
+ } else if (Res > 0) {
+ Hi = Cur - 1;
+ } else {
+ /* Found! */
+ *Index = Cur;
+ return 1;
+ }
+ }
+
+ /* Pass back the insert position */
+ *Index = Lo;
+ return 0;
+}
+
+
+
+void AddAttr (Collection* C, const char* Name, const char* Value)
+/* Add an attribute to an alphabetically sorted attribute collection */
+{
+ /* Create a new attribute entry */
+ Attr* A = NewAttr (Name, Value);
+
+ /* Search for the attribute. If it is there, we have a duplicate, otherwise
+ * we have the insert position.
+ */
+ unsigned Index;
+ if (FindAttr (C, Name, &Index)) {
+ Error ("Duplicate command line attribute `%s'", Name);
+ }
+
+ /* Insert the attribute */
+ CollInsert (C, A, Index);
+}
+
+
+
+void SplitAddAttr (Collection* C, const char* Combined, const char* Name)
+/* Split a combined name/value pair and add it as an attribute to C. Some
+ * attributes may not need a name. If the name is missing, use Name. If
+ * Name is NULL, terminate with an error.
+ */
+{
+ /* Name and value are separated by an equal sign */
+ const char* Pos = strchr (Combined, '=');
+ if (Pos == 0) {
+ /* Combined is actually a value */
+ if (Name == 0) {
+ Error ("Command line attribute `%s' doesn't contain a name", Name);
+ }
+ AddAttr (C, Name, Combined);
+ } else {
+ /* Must split name and value */
+ StrBuf N = AUTO_STRBUF_INITIALIZER;
+ SB_CopyBuf (&N, Combined, Pos - Combined);
+ SB_Terminate (&N);
+
+ /* Add the attribute */
+ AddAttr (C, SB_GetConstBuf (&N), Pos+1);
+
+ /* Release memory */
+ SB_Done (&N);
+ }
+}
+
+
+
--- /dev/null
+/*****************************************************************************/
+/* */
+/* attr.h */
+/* */
+/* Command line attributes */
+/* */
+/* */
+/* */
+/* (C) 2012, Ullrich von Bassewitz */
+/* Roemerstrasse 52 */
+/* D-70794 Filderstadt */
+/* EMail: uz@cc65.org */
+/* */
+/* */
+/* This software is provided 'as-is', without any expressed or implied */
+/* warranty. In no event will the authors be held liable for any damages */
+/* arising from the use of this software. */
+/* */
+/* Permission is granted to anyone to use this software for any purpose, */
+/* including commercial applications, and to alter it and redistribute it */
+/* freely, subject to the following restrictions: */
+/* */
+/* 1. The origin of this software must not be misrepresented; you must not */
+/* claim that you wrote the original software. If you use this software */
+/* in a product, an acknowledgment in the product documentation would be */
+/* appreciated but is not required. */
+/* 2. Altered source versions must be plainly marked as such, and must not */
+/* be misrepresented as being the original software. */
+/* 3. This notice may not be removed or altered from any source */
+/* distribution. */
+/* */
+/*****************************************************************************/
+
+
+
+#ifndef ATTRCOLL_H
+#define ATTRCOLL_H
+
+
+
+/* common */
+#include "coll.h"
+
+
+
+/*****************************************************************************/
+/* Data */
+/*****************************************************************************/
+
+
+
+/* Attribute flags */
+enum AttrFlags {
+ afNone,
+ afInt, /* Integer number */
+};
+typedef enum AttrFlags AttrFlags;
+
+/* */
+typedef struct Attr Attr;
+struct Attr {
+ AttrFlags Flags; /* Attribute flags */
+ char* Name; /* Attribute name */
+ char Value[1]; /* Attribute value */
+};
+
+
+
+/*****************************************************************************/
+/* Code */
+/*****************************************************************************/
+
+
+
+Attr* NewAttr (const char* Name, const char* Value);
+/* Create a new attribute */
+
+void DumpAttrColl (const Collection* C);
+/* Dump a collection of attribute/value pairs for debugging */
+
+int FindAttr (const Collection* C, const char* Name, unsigned* Index);
+/* Search for an attribute with the given name in the collection. If it is
+ * found, the function returns true and Index contains the index of the
+ * entry. If Name isn't found, the function returns false and Index
+ * will contain the insert position.
+ */
+
+void AddAttr (Collection* C, const char* Name, const char* Value);
+/* Add an attribute to an alphabetically sorted attribute collection */
+
+void SplitAddAttr (Collection* C, const char* Combined, const char* Name);
+/* Split a combined name/value pair and add it as an attribute to C. Some
+ * attributes may not need a name. If the name is missing, use Name. If
+ * Name is NULL, terminate with an error.
+ */
+
+
+
+/* End of attr.h */
+
+#endif
+
+
+
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