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9d439d9dd2
git-svn-id: svn://svn.cc65.org/cc65/trunk@2904 b7a2c559-68d2-44c3-8de9-860c34a00d81
86 lines
3.5 KiB
C
86 lines
3.5 KiB
C
/*****************************************************************************/
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/* */
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/* strstack.c */
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/* */
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/* String stack used for program settings */
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/* */
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/* */
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/* */
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/* (C) 2004 Ullrich von Bassewitz */
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/* Römerstraße 52 */
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/* D-70794 Filderstadt */
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/* EMail: uz@cc65.org */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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/* common */
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#include "check.h"
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#include "strstack.h"
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#include "xmalloc.h"
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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const char* SS_Get (const StrStack* S)
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/* Get the value on top of a string stack */
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{
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CHECK (S->Count > 0);
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return S->Stack[S->Count-1];
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}
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void SS_Set (StrStack* S, const char* Val)
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/* Set the value on top of a string stack */
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{
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CHECK (S->Count > 0);
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xfree (S->Stack[S->Count-1]);
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S->Stack[S->Count-1] = xstrdup (Val);
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}
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void SS_Drop (StrStack* S)
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/* Drop a value from a string stack */
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{
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CHECK (S->Count > 1);
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xfree (S->Stack[--S->Count]);
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}
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void SS_Push (StrStack* S, const char* Val)
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/* Push a value onto a string stack */
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{
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CHECK (S->Count < sizeof (S->Stack) / sizeof (S->Stack[0]));
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S->Stack[S->Count++] = xstrdup (Val);
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}
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