/src/libreoffice/vcl/source/helper/strhelper.cxx

Source
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#include <strhelper.hxx>

namespace  {

bool isSpace( sal_Unicode cChar )
{
    return
        cChar == ' '    || cChar == '\t'    ||
        cChar == '\r'   || cChar == '\n'    ||
        cChar == 0x0c   || cChar == 0x0b;
}

bool isProtect( sal_Unicode cChar )
{
    return cChar == '`' || cChar == '\'' || cChar == '"';
}

void CopyUntil( char*& pTo, const char*& pFrom, char cUntil, bool bIncludeUntil = false )
{
    do
    {
        if( *pFrom == '\\' )
        {
            pFrom++;
            if( *pFrom )
            {
                *pTo = *pFrom;
                pTo++;
            }
        }
        else if( bIncludeUntil || ! isProtect( *pFrom ) )
        {
            *pTo = *pFrom;
            pTo++;
        }
        pFrom++;
    } while( *pFrom && *pFrom != cUntil );
    // copy the terminating character unless zero or protector
    if( ! isProtect( *pFrom ) || bIncludeUntil )
    {
        *pTo = *pFrom;
        if( *pTo )
            pTo++;
    }
    if( *pFrom )
        pFrom++;
}

void CopyUntil( sal_Unicode*& pTo, const sal_Unicode*& pFrom, sal_Unicode cUntil, bool bIncludeUntil = false )
{
    do
    {
        if( *pFrom == '\\' )
        {
            pFrom++;
            if( *pFrom )
            {
                *pTo = *pFrom;
                pTo++;
            }
        }
        else if( bIncludeUntil || ! isProtect( *pFrom ) )
        {
            *pTo = *pFrom;
            pTo++;
        }
        if( *pFrom )
            pFrom++;
    } while( *pFrom && *pFrom != cUntil );
    // copy the terminating character unless zero or protector
    if( ! isProtect( *pFrom ) || bIncludeUntil )
    {
        *pTo = *pFrom;
        if( *pTo )
            pTo++;
    }
    if( *pFrom )
        pFrom++;
}

}

namespace psp {

OUString GetCommandLineToken( int nToken, const OUString& rLine )
{
    sal_Int32 nLen = rLine.getLength();
    if( ! nLen )
        return OUString();

    int nActualToken = 0;
    sal_Unicode* pBuffer = static_cast<sal_Unicode*>(alloca( sizeof(sal_Unicode)*( nLen + 1 ) ));
    const sal_Unicode* pRun = rLine.getStr();
    sal_Unicode* pLeap = nullptr;

    while( *pRun && nActualToken <= nToken )
    {
        while( *pRun && isSpace( *pRun ) )
            pRun++;
        pLeap = pBuffer;
        while( *pRun && ! isSpace( *pRun ) )
        {
            if( *pRun == '\\' )
            {
                // escapement
                pRun++;
                *pLeap = *pRun;
                pLeap++;
                if( *pRun )
                    pRun++;
            }
            else if( *pRun == '`' )
                CopyUntil( pLeap, pRun, '`' );
            else if( *pRun == '\'' )
                CopyUntil( pLeap, pRun, '\'' );
            else if( *pRun == '"' )
                CopyUntil( pLeap, pRun, '"' );
            else
            {
                *pLeap = *pRun;
                pLeap++;
                pRun++;
            }
        }
        if( nActualToken != nToken )
            pBuffer[0] = 0;
        nActualToken++;
    }

    assert(pLeap && "otherwise would early return");
    *pLeap = 0;

    return OUString(pBuffer);
}

OString GetCommandLineToken(int nToken, const OString& rLine)
{
    sal_Int32 nLen = rLine.getLength();
    if (!nLen)
        return rLine;

    int nActualToken = 0;
    char* pBuffer = static_cast<char*>(alloca( nLen + 1 ));
    const char* pRun = rLine.getStr();
    char* pLeap = nullptr;

    while( *pRun && nActualToken <= nToken )
    {
        while( *pRun && isSpace( *pRun ) )
            pRun++;
        pLeap = pBuffer;
        while( *pRun && ! isSpace( *pRun ) )
        {
            if( *pRun == '\\' )
            {
                // escapement
                pRun++;
                *pLeap = *pRun;
                pLeap++;
                if( *pRun )
                    pRun++;
            }
            else if( *pRun == '`' )
                CopyUntil( pLeap, pRun, '`' );
            else if( *pRun == '\'' )
                CopyUntil( pLeap, pRun, '\'' );
            else if( *pRun == '"' )
                CopyUntil( pLeap, pRun, '"' );
            else
            {
                *pLeap = *pRun;
                pLeap++;
                pRun++;
            }
        }
        if( nActualToken != nToken )
            pBuffer[0] = 0;
        nActualToken++;
    }

    assert(pLeap && "otherwise would early return");
    *pLeap = 0;

    return pBuffer;
}

int GetCommandLineTokenCount(const OUString& rLine)
{
    if (rLine.isEmpty())
        return 0;

    int nTokenCount = 0;
    const sal_Unicode *pRun = rLine.getStr();

    while( *pRun )
    {
        while( *pRun && isSpace( *pRun ) )
            pRun++;
        if( ! *pRun )
            break;
        while( *pRun && ! isSpace( *pRun ) )
        {
            if( *pRun == '\\' )
            {
                // escapement
                pRun++;
                if( *pRun )
                    pRun++;
            }
            else if( *pRun == '`' )
            {
                do pRun++; while( *pRun && *pRun != '`' );
                if( *pRun )
                    pRun++;
            }
            else if( *pRun == '\'' )
            {
                do pRun++; while( *pRun && *pRun != '\'' );
                if( *pRun )
                    pRun++;
            }
            else if( *pRun == '"' )
            {
                do pRun++; while( *pRun && *pRun != '"' );
                if( *pRun )
                    pRun++;
            }
            else
                pRun++;
        }
        nTokenCount++;
    }

    return nTokenCount;
}

OUString WhitespaceToSpace( std::u16string_view rLine )
{
    size_t nLen = rLine.size();
    if( ! nLen )
        return OUString();

    sal_Unicode *pBuffer = static_cast<sal_Unicode*>(alloca( sizeof(sal_Unicode)*(nLen + 1) ));
    const sal_Unicode *pRun = rLine.data();
    const sal_Unicode * const pEnd = rLine.data() + rLine.size();
    sal_Unicode *pLeap = pBuffer;

    while( pRun != pEnd )
    {
        if( isSpace( *pRun ) )
        {
            *pLeap = ' ';
            pLeap++;
            pRun++;
        }
        while( pRun != pEnd && isSpace( *pRun ) )
            pRun++;
        while( pRun != pEnd && ! isSpace( *pRun ) )
        {
            if( *pRun == '\\' )
            {
                // escapement
                pRun++;
                *pLeap = *pRun;
                pLeap++;
                if( pRun != pEnd )
                    pRun++;
            }
            else if( *pRun == '`' )
                CopyUntil( pLeap, pRun, '`', true );
            else if( *pRun == '\'' )
                CopyUntil( pLeap, pRun, '\'', true );
            else if( *pRun == '"' )
                CopyUntil( pLeap, pRun, '"', true );
            else
            {
                *pLeap = *pRun;
                ++pLeap;
                ++pRun;
            }
        }
    }

    *pLeap = 0;

    // there might be a space at beginning or end
    if (pLeap > pBuffer)
    {
        pLeap--;
        if( *pLeap == ' ' )
            *pLeap = 0;
    }

    return OUString(*pBuffer == ' ' ? pBuffer+1 : pBuffer);
}

OString WhitespaceToSpace(std::string_view rLine)
{
    size_t nLen = rLine.size();
    if (!nLen)
        return OString();

    char *pBuffer = static_cast<char*>(alloca( nLen + 1 ));
    const char *pRun = rLine.data();
    const char * const pEnd = rLine.data() + rLine.size();
    char *pLeap = pBuffer;

    while( pRun != pEnd )
    {
        if( isSpace( *pRun ) )
        {
            *pLeap = ' ';
            pLeap++;
            pRun++;
        }
        while( pRun != pEnd && isSpace( *pRun ) )
            pRun++;
        while( pRun != pEnd && ! isSpace( *pRun ) )
        {
            if( *pRun == '\\' )
            {
                // escapement
                pRun++;
                *pLeap = *pRun;
                pLeap++;
                if( pRun != pEnd )
                    pRun++;
            }
            else if( *pRun == '`' )
                CopyUntil( pLeap, pRun, '`', true );
            else if( *pRun == '\'' )
                CopyUntil( pLeap, pRun, '\'', true );
            else if( *pRun == '"' )
                CopyUntil( pLeap, pRun, '"', true );
            else
            {
                *pLeap = *pRun;
                ++pLeap;
                ++pRun;
            }
        }
    }

    *pLeap = 0;

    // there might be a space at beginning or end
    assert(pLeap > pBuffer);
    pLeap--;
#if defined(__GNUC__) && __GNUC__ >= 12 && __GNUC__ <= 15
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
#endif
    if( *pLeap == ' ' )
        *pLeap = 0;
#if defined(__GNUC__) && __GNUC__ >= 12 && __GNUC__ <= 15
#pragma GCC diagnostic pop
#endif
    return *pBuffer == ' ' ? pBuffer+1 : pBuffer;
}

} // namespace

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */

Coverage Report

Created: 2025-12-31 10:39

Line	Count	Source
1		/* -- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -- */
2		/*
3		* This file is part of the LibreOffice project.
4		*
5		* This Source Code Form is subject to the terms of the Mozilla Public
6		* License, v. 2.0. If a copy of the MPL was not distributed with this
7		* file, You can obtain one at http://mozilla.org/MPL/2.0/.
8		*
9		* This file incorporates work covered by the following license notice:
10		*
11		* Licensed to the Apache Software Foundation (ASF) under one or more
12		* contributor license agreements. See the NOTICE file distributed
13		* with this work for additional information regarding copyright
14		* ownership. The ASF licenses this file to you under the Apache
15		* License, Version 2.0 (the "License"); you may not use this file
16		* except in compliance with the License. You may obtain a copy of
17		* the License at http://www.apache.org/licenses/LICENSE-2.0 .
18		*/
19
20		#include <strhelper.hxx>
21
22		namespace {
23
24		bool isSpace( sal_Unicode cChar )
25	17.3k	{
26	17.3k	return
27	17.3k	cChar == ' ' \|\| cChar == '\t' \|\|
28	15.6k	cChar == '\r' \|\| cChar == '\n' \|\|
29	15.6k	cChar == 0x0c \|\| cChar == 0x0b;
30	17.3k	}
31
32		bool isProtect( sal_Unicode cChar )
33	1	{
34	1	return cChar == '`' \|\| cChar == '\'' \|\| cChar == '"';
35	1	}
36
37		void CopyUntil( char& pTo, const char& pFrom, char cUntil, bool bIncludeUntil = false )
38	0	{
39	0	do
40	0	{
41	0	if( *pFrom == '\\' )
42	0	{
43	0	pFrom++;
44	0	if( *pFrom )
45	0	{
46	0	pTo = pFrom;
47	0	pTo++;
48	0	}
49	0	}
50	0	else if( bIncludeUntil \|\| ! isProtect( *pFrom ) )
51	0	{
52	0	pTo = pFrom;
53	0	pTo++;
54	0	}
55	0	pFrom++;
56	0	} while( pFrom && pFrom != cUntil );
57		// copy the terminating character unless zero or protector
58	0	if( ! isProtect( *pFrom ) \|\| bIncludeUntil )
59	0	{
60	0	pTo = pFrom;
61	0	if( *pTo )
62	0	pTo++;
63	0	}
64	0	if( *pFrom )
65	0	pFrom++;
66	0	}
67
68		void CopyUntil( sal_Unicode& pTo, const sal_Unicode& pFrom, sal_Unicode cUntil, bool bIncludeUntil = false )
69	1	{
70	1	do
71	16	{
72	16	if( *pFrom == '\\' )
73	0	{
74	0	pFrom++;
75	0	if( *pFrom )
76	0	{
77	0	pTo = pFrom;
78	0	pTo++;
79	0	}
80	0	}
81	16	else if( bIncludeUntil \|\| ! isProtect( *pFrom ) )
82	16	{
83	16	pTo = pFrom;
84	16	pTo++;
85	16	}
86	16	if( *pFrom )
87	16	pFrom++;
88	16	} while( pFrom && pFrom != cUntil );
89		// copy the terminating character unless zero or protector
90	1	if( ! isProtect( *pFrom ) \|\| bIncludeUntil )
91	1	{
92	1	pTo = pFrom;
93	1	if( *pTo )
94	1	pTo++;
95	1	}
96	1	if( *pFrom )
97	1	pFrom++;
98	1	}
99
100		}
101
102		namespace psp {
103
104		OUString GetCommandLineToken( int nToken, const OUString& rLine )
105	0	{
106	0	sal_Int32 nLen = rLine.getLength();
107	0	if( ! nLen )
108	0	return OUString();
109
110	0	int nActualToken = 0;
111	0	sal_Unicode* pBuffer = static_cast<sal_Unicode>(alloca( sizeof(sal_Unicode)( nLen + 1 ) ));
112	0	const sal_Unicode* pRun = rLine.getStr();
113	0	sal_Unicode* pLeap = nullptr;
114
115	0	while( *pRun && nActualToken <= nToken )
116	0	{
117	0	while( pRun && isSpace( pRun ) )
118	0	pRun++;
119	0	pLeap = pBuffer;
120	0	while( pRun && ! isSpace( pRun ) )
121	0	{
122	0	if( *pRun == '\\' )
123	0	{
124		// escapement
125	0	pRun++;
126	0	pLeap = pRun;
127	0	pLeap++;
128	0	if( *pRun )
129	0	pRun++;
130	0	}
131	0	else if( *pRun == '`' )
132	0	CopyUntil( pLeap, pRun, '`' );
133	0	else if( *pRun == '\'' )
134	0	CopyUntil( pLeap, pRun, '\'' );
135	0	else if( *pRun == '"' )
136	0	CopyUntil( pLeap, pRun, '"' );
137	0	else
138	0	{
139	0	pLeap = pRun;
140	0	pLeap++;
141	0	pRun++;
142	0	}
143	0	}
144	0	if( nActualToken != nToken )
145	0	pBuffer[0] = 0;
146	0	nActualToken++;
147	0	}
148
149	0	assert(pLeap && "otherwise would early return");
150	0	*pLeap = 0;
151
152	0	return OUString(pBuffer);
153	0	}
154
155		OString GetCommandLineToken(int nToken, const OString& rLine)
156	0	{
157	0	sal_Int32 nLen = rLine.getLength();
158	0	if (!nLen)
159	0	return rLine;
160
161	0	int nActualToken = 0;
162	0	char* pBuffer = static_cast<char*>(alloca( nLen + 1 ));
163	0	const char* pRun = rLine.getStr();
164	0	char* pLeap = nullptr;
165
166	0	while( *pRun && nActualToken <= nToken )
167	0	{
168	0	while( pRun && isSpace( pRun ) )
169	0	pRun++;
170	0	pLeap = pBuffer;
171	0	while( pRun && ! isSpace( pRun ) )
172	0	{
173	0	if( *pRun == '\\' )
174	0	{
175		// escapement
176	0	pRun++;
177	0	pLeap = pRun;
178	0	pLeap++;
179	0	if( *pRun )
180	0	pRun++;
181	0	}
182	0	else if( *pRun == '`' )
183	0	CopyUntil( pLeap, pRun, '`' );
184	0	else if( *pRun == '\'' )
185	0	CopyUntil( pLeap, pRun, '\'' );
186	0	else if( *pRun == '"' )
187	0	CopyUntil( pLeap, pRun, '"' );
188	0	else
189	0	{
190	0	pLeap = pRun;
191	0	pLeap++;
192	0	pRun++;
193	0	}
194	0	}
195	0	if( nActualToken != nToken )
196	0	pBuffer[0] = 0;
197	0	nActualToken++;
198	0	}
199
200	0	assert(pLeap && "otherwise would early return");
201	0	*pLeap = 0;
202
203	0	return pBuffer;
204	0	}
205
206		int GetCommandLineTokenCount(const OUString& rLine)
207	0	{
208	0	if (rLine.isEmpty())
209	0	return 0;
210
211	0	int nTokenCount = 0;
212	0	const sal_Unicode *pRun = rLine.getStr();
213
214	0	while( *pRun )
215	0	{
216	0	while( pRun && isSpace( pRun ) )
217	0	pRun++;
218	0	if( ! *pRun )
219	0	break;
220	0	while( pRun && ! isSpace( pRun ) )
221	0	{
222	0	if( *pRun == '\\' )
223	0	{
224		// escapement
225	0	pRun++;
226	0	if( *pRun )
227	0	pRun++;
228	0	}
229	0	else if( *pRun == '`' )
230	0	{
231	0	do pRun++; while( pRun && pRun != '`' );
232	0	if( *pRun )
233	0	pRun++;
234	0	}
235	0	else if( *pRun == '\'' )
236	0	{
237	0	do pRun++; while( pRun && pRun != '\'' );
238	0	if( *pRun )
239	0	pRun++;
240	0	}
241	0	else if( *pRun == '"' )
242	0	{
243	0	do pRun++; while( pRun && pRun != '"' );
244	0	if( *pRun )
245	0	pRun++;
246	0	}
247	0	else
248	0	pRun++;
249	0	}
250	0	nTokenCount++;
251	0	}
252
253	0	return nTokenCount;
254	0	}
255
256		OUString WhitespaceToSpace( std::u16string_view rLine )
257	571	{
258	571	size_t nLen = rLine.size();
259	571	if( ! nLen )
260	0	return OUString();
261
262	571	sal_Unicode pBuffer = static_cast<sal_Unicode>(alloca( sizeof(sal_Unicode)*(nLen + 1) ));
263	571	const sal_Unicode *pRun = rLine.data();
264	571	const sal_Unicode * const pEnd = rLine.data() + rLine.size();
265	571	sal_Unicode *pLeap = pBuffer;
266
267	1.98k	while( pRun != pEnd )
268	1.41k	{
269	1.41k	if( isSpace( *pRun ) )
270	841	{
271	841	*pLeap = ' ';
272	841	pLeap++;
273	841	pRun++;
274	841	}
275	1.41k	while( pRun != pEnd && isSpace( *pRun ) )
276	0	pRun++;
277	15.0k	while( pRun != pEnd && ! isSpace( *pRun ) )
278	13.6k	{
279	13.6k	if( *pRun == '\\' )
280	0	{
281		// escapement
282	0	pRun++;
283	0	pLeap = pRun;
284	0	pLeap++;
285	0	if( pRun != pEnd )
286	0	pRun++;
287	0	}
288	13.6k	else if( *pRun == '`' )
289	0	CopyUntil( pLeap, pRun, '`', true );
290	13.6k	else if( *pRun == '\'' )
291	0	CopyUntil( pLeap, pRun, '\'', true );
292	13.6k	else if( *pRun == '"' )
293	1	CopyUntil( pLeap, pRun, '"', true );
294	13.6k	else
295	13.6k	{
296	13.6k	pLeap = pRun;
297	13.6k	++pLeap;
298	13.6k	++pRun;
299	13.6k	}
300	13.6k	}
301	1.41k	}
302
303	571	*pLeap = 0;
304
305		// there might be a space at beginning or end
306	571	if (pLeap > pBuffer)
307	571	{
308	571	pLeap--;
309	571	if( *pLeap == ' ' )
310	0	*pLeap = 0;
311	571	}
312
313	571	return OUString(*pBuffer == ' ' ? pBuffer+1 : pBuffer);
314	571	}
315
316		OString WhitespaceToSpace(std::string_view rLine)
317	0	{
318	0	size_t nLen = rLine.size();
319	0	if (!nLen)
320	0	return OString();
321
322	0	char pBuffer = static_cast<char>(alloca( nLen + 1 ));
323	0	const char *pRun = rLine.data();
324	0	const char * const pEnd = rLine.data() + rLine.size();
325	0	char *pLeap = pBuffer;
326
327	0	while( pRun != pEnd )
328	0	{
329	0	if( isSpace( *pRun ) )
330	0	{
331	0	*pLeap = ' ';
332	0	pLeap++;
333	0	pRun++;
334	0	}
335	0	while( pRun != pEnd && isSpace( *pRun ) )
336	0	pRun++;
337	0	while( pRun != pEnd && ! isSpace( *pRun ) )
338	0	{
339	0	if( *pRun == '\\' )
340	0	{
341		// escapement
342	0	pRun++;
343	0	pLeap = pRun;
344	0	pLeap++;
345	0	if( pRun != pEnd )
346	0	pRun++;
347	0	}
348	0	else if( *pRun == '`' )
349	0	CopyUntil( pLeap, pRun, '`', true );
350	0	else if( *pRun == '\'' )
351	0	CopyUntil( pLeap, pRun, '\'', true );
352	0	else if( *pRun == '"' )
353	0	CopyUntil( pLeap, pRun, '"', true );
354	0	else
355	0	{
356	0	pLeap = pRun;
357	0	++pLeap;
358	0	++pRun;
359	0	}
360	0	}
361	0	}
362
363	0	*pLeap = 0;
364
365		// there might be a space at beginning or end
366	0	assert(pLeap > pBuffer);
367	0	pLeap--;
368		#if defined(__GNUC__) && __GNUC__ >= 12 && __GNUC__ <= 15
369		#pragma GCC diagnostic push
370		#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
371		#endif
372	0	if( *pLeap == ' ' )
373	0	*pLeap = 0;
374		#if defined(__GNUC__) && __GNUC__ >= 12 && __GNUC__ <= 15
375		#pragma GCC diagnostic pop
376		#endif
377	0	return *pBuffer == ' ' ? pBuffer+1 : pBuffer;
378	0	}
379
380		} // namespace
381
382		/* vim:set shiftwidth=4 softtabstop=4 expandtab: */