/src/icu/source/common/uenum.cpp

Source (jump to first uncovered line)
// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
*
*   Copyright (C) 2002-2012, International Business Machines
*   Corporation and others.  All Rights Reserved.
*
*******************************************************************************
*   file name:  uenum.c
*   encoding:   UTF-8
*   tab size:   8 (not used)
*   indentation:2
*
*   created on: 2002jul08
*   created by: Vladimir Weinstein
*/

#include "unicode/putil.h"
#include "uenumimp.h"
#include "cmemory.h"

/* Layout of the baseContext buffer. */
typedef struct {
    int32_t len;  /* number of bytes available starting at 'data' */
    char    data; /* actual data starts here */
} _UEnumBuffer;

/* Extra bytes to allocate in the baseContext buffer. */
static const int32_t PAD = 8;

/* Return a pointer to the baseContext buffer, possibly allocating
   or reallocating it if at least 'capacity' bytes are not available. */
static void* _getBuffer(UEnumeration* en, int32_t capacity) {

    if (en->baseContext != NULL) {
        if (((_UEnumBuffer*) en->baseContext)->len < capacity) {
            capacity += PAD;
            en->baseContext = uprv_realloc(en->baseContext,
                                           sizeof(int32_t) + capacity);
            if (en->baseContext == NULL) {
                return NULL;
            }
            ((_UEnumBuffer*) en->baseContext)->len = capacity;
        }
    } else {
        capacity += PAD;
        en->baseContext = uprv_malloc(sizeof(int32_t) + capacity);
        if (en->baseContext == NULL) {
            return NULL;
        }
        ((_UEnumBuffer*) en->baseContext)->len = capacity;
    }
    
    return (void*) & ((_UEnumBuffer*) en->baseContext)->data;
}

U_CAPI void U_EXPORT2
uenum_close(UEnumeration* en)
{
    if (en) {
        if (en->close != NULL) {
            if (en->baseContext) {
                uprv_free(en->baseContext);
            }
            en->close(en);
        } else { /* this seems dangerous, but we better kill the object */
            uprv_free(en);
        }
    }
}

U_CAPI int32_t U_EXPORT2
uenum_count(UEnumeration* en, UErrorCode* status)
{
    if (!en || U_FAILURE(*status)) {
        return -1;
    }
    if (en->count != NULL) {
        return en->count(en, status);
    } else {
        *status = U_UNSUPPORTED_ERROR;
        return -1;
    }
}

/* Don't call this directly. Only uenum_unext should be calling this. */
U_CAPI const UChar* U_EXPORT2
uenum_unextDefault(UEnumeration* en,
            int32_t* resultLength,
            UErrorCode* status)
{
    UChar *ustr = NULL;
    int32_t len = 0;
    if (en->next != NULL) {
        const char *cstr = en->next(en, &len, status);
        if (cstr != NULL) {
            ustr = (UChar*) _getBuffer(en, (len+1) * sizeof(UChar));
            if (ustr == NULL) {
                *status = U_MEMORY_ALLOCATION_ERROR;
            } else {
                u_charsToUChars(cstr, ustr, len+1);
            }
        }
    } else {
        *status = U_UNSUPPORTED_ERROR;
    }
    if (resultLength) {
        *resultLength = len;
    }
    return ustr;
}

/* Don't call this directly. Only uenum_next should be calling this. */
U_CAPI const char* U_EXPORT2
uenum_nextDefault(UEnumeration* en,
            int32_t* resultLength,
            UErrorCode* status)
{
    if (en->uNext != NULL) {
        char *tempCharVal;
        const UChar *tempUCharVal = en->uNext(en, resultLength, status);
        if (tempUCharVal == NULL) {
            return NULL;
        }
        tempCharVal = (char*)
            _getBuffer(en, (*resultLength+1) * sizeof(char));
        if (!tempCharVal) {
            *status = U_MEMORY_ALLOCATION_ERROR;
            return NULL;
        }
        u_UCharsToChars(tempUCharVal, tempCharVal, *resultLength + 1);
        return tempCharVal;
    } else {
        *status = U_UNSUPPORTED_ERROR;
        return NULL;
    }
}

U_CAPI const UChar* U_EXPORT2
uenum_unext(UEnumeration* en,
            int32_t* resultLength,
            UErrorCode* status)
{
    if (!en || U_FAILURE(*status)) {
        return NULL;
    }
    if (en->uNext != NULL) {
        return en->uNext(en, resultLength, status);
    } else {
        *status = U_UNSUPPORTED_ERROR;
        return NULL;
    }
}

U_CAPI const char* U_EXPORT2
uenum_next(UEnumeration* en,
          int32_t* resultLength,
          UErrorCode* status)
{
    if (!en || U_FAILURE(*status)) {
        return NULL;
    }
    if (en->next != NULL) {
        if (resultLength != NULL) {
            return en->next(en, resultLength, status);
        }
        else {
            int32_t dummyLength=0;
            return en->next(en, &dummyLength, status);
        }
    } else {
        *status = U_UNSUPPORTED_ERROR;
        return NULL;
    }
}

U_CAPI void U_EXPORT2
uenum_reset(UEnumeration* en, UErrorCode* status)
{
    if (!en || U_FAILURE(*status)) {
        return;
    }
    if (en->reset != NULL) {
        en->reset(en, status);
    } else {
        *status = U_UNSUPPORTED_ERROR;
    }
}

Line	Count	Source (jump to first uncovered line)
1		// © 2016 and later: Unicode, Inc. and others.
2		// License & terms of use: http://www.unicode.org/copyright.html
3		/*
4		*******************************************************************************
5		*
6		* Copyright (C) 2002-2012, International Business Machines
7		* Corporation and others. All Rights Reserved.
8		*
9		*******************************************************************************
10		* file name: uenum.c
11		* encoding: UTF-8
12		* tab size: 8 (not used)
13		* indentation:2
14		*
15		* created on: 2002jul08
16		* created by: Vladimir Weinstein
17		*/
18
19		#include "unicode/putil.h"
20		#include "uenumimp.h"
21		#include "cmemory.h"
22
23		/* Layout of the baseContext buffer. */
24		typedef struct {
25		int32_t len; /* number of bytes available starting at 'data' */
26		char data; /* actual data starts here */
27		} _UEnumBuffer;
28
29		/* Extra bytes to allocate in the baseContext buffer. */
30		static const int32_t PAD = 8;
31
32		/* Return a pointer to the baseContext buffer, possibly allocating
33		or reallocating it if at least 'capacity' bytes are not available. */
34	0	static void* _getBuffer(UEnumeration* en, int32_t capacity) {
35
36	0	if (en->baseContext != NULL) {
37	0	if (((_UEnumBuffer*) en->baseContext)->len < capacity) {
38	0	capacity += PAD;
39	0	en->baseContext = uprv_realloc(en->baseContext,
40	0	sizeof(int32_t) + capacity);
41	0	if (en->baseContext == NULL) {
42	0	return NULL;
43	0	}
44	0	((_UEnumBuffer*) en->baseContext)->len = capacity;
45	0	}
46	0	} else {
47	0	capacity += PAD;
48	0	en->baseContext = uprv_malloc(sizeof(int32_t) + capacity);
49	0	if (en->baseContext == NULL) {
50	0	return NULL;
51	0	}
52	0	((_UEnumBuffer*) en->baseContext)->len = capacity;
53	0	}
54
55	0	return (void) & ((_UEnumBuffer) en->baseContext)->data;
56	0	}
57
58		U_CAPI void U_EXPORT2
59		uenum_close(UEnumeration* en)
60	0	{
61	0	if (en) {
62	0	if (en->close != NULL) {
63	0	if (en->baseContext) {
64	0	uprv_free(en->baseContext);
65	0	}
66	0	en->close(en);
67	0	} else { /* this seems dangerous, but we better kill the object */
68	0	uprv_free(en);
69	0	}
70	0	}
71	0	}
72
73		U_CAPI int32_t U_EXPORT2
74		uenum_count(UEnumeration* en, UErrorCode* status)
75	0	{
76	0	if (!en \|\| U_FAILURE(*status)) {
77	0	return -1;
78	0	}
79	0	if (en->count != NULL) {
80	0	return en->count(en, status);
81	0	} else {
82	0	*status = U_UNSUPPORTED_ERROR;
83	0	return -1;
84	0	}
85	0	}
86
87		/* Don't call this directly. Only uenum_unext should be calling this. */
88		U_CAPI const UChar* U_EXPORT2
89		uenum_unextDefault(UEnumeration* en,
90		int32_t* resultLength,
91		UErrorCode* status)
92	0	{
93	0	UChar *ustr = NULL;
94	0	int32_t len = 0;
95	0	if (en->next != NULL) {
96	0	const char *cstr = en->next(en, &len, status);
97	0	if (cstr != NULL) {
98	0	ustr = (UChar) _getBuffer(en, (len+1) sizeof(UChar));
99	0	if (ustr == NULL) {
100	0	*status = U_MEMORY_ALLOCATION_ERROR;
101	0	} else {
102	0	u_charsToUChars(cstr, ustr, len+1);
103	0	}
104	0	}
105	0	} else {
106	0	*status = U_UNSUPPORTED_ERROR;
107	0	}
108	0	if (resultLength) {
109	0	*resultLength = len;
110	0	}
111	0	return ustr;
112	0	}
113
114		/* Don't call this directly. Only uenum_next should be calling this. */
115		U_CAPI const char* U_EXPORT2
116		uenum_nextDefault(UEnumeration* en,
117		int32_t* resultLength,
118		UErrorCode* status)
119	0	{
120	0	if (en->uNext != NULL) {
121	0	char *tempCharVal;
122	0	const UChar *tempUCharVal = en->uNext(en, resultLength, status);
123	0	if (tempUCharVal == NULL) {
124	0	return NULL;
125	0	}
126	0	tempCharVal = (char*)
127	0	_getBuffer(en, (resultLength+1) sizeof(char));
128	0	if (!tempCharVal) {
129	0	*status = U_MEMORY_ALLOCATION_ERROR;
130	0	return NULL;
131	0	}
132	0	u_UCharsToChars(tempUCharVal, tempCharVal, *resultLength + 1);
133	0	return tempCharVal;
134	0	} else {
135	0	*status = U_UNSUPPORTED_ERROR;
136	0	return NULL;
137	0	}
138	0	}
139
140		U_CAPI const UChar* U_EXPORT2
141		uenum_unext(UEnumeration* en,
142		int32_t* resultLength,
143		UErrorCode* status)
144	0	{
145	0	if (!en \|\| U_FAILURE(*status)) {
146	0	return NULL;
147	0	}
148	0	if (en->uNext != NULL) {
149	0	return en->uNext(en, resultLength, status);
150	0	} else {
151	0	*status = U_UNSUPPORTED_ERROR;
152	0	return NULL;
153	0	}
154	0	}
155
156		U_CAPI const char* U_EXPORT2
157		uenum_next(UEnumeration* en,
158		int32_t* resultLength,
159		UErrorCode* status)
160	0	{
161	0	if (!en \|\| U_FAILURE(*status)) {
162	0	return NULL;
163	0	}
164	0	if (en->next != NULL) {
165	0	if (resultLength != NULL) {
166	0	return en->next(en, resultLength, status);
167	0	}
168	0	else {
169	0	int32_t dummyLength=0;
170	0	return en->next(en, &dummyLength, status);
171	0	}
172	0	} else {
173	0	*status = U_UNSUPPORTED_ERROR;
174	0	return NULL;
175	0	}
176	0	}
177
178		U_CAPI void U_EXPORT2
179		uenum_reset(UEnumeration* en, UErrorCode* status)
180	0	{
181	0	if (!en \|\| U_FAILURE(*status)) {
182	0	return;
183	0	}
184	0	if (en->reset != NULL) {
185	0	en->reset(en, status);
186	0	} else {
187	0	*status = U_UNSUPPORTED_ERROR;
188	0	}
189	0	}

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Created: 2025-01-28 06:38