destination-access/src/xmlparse.h

/***************************************
 A simple XML parser

 Part of the Routino routing software.
 ******************/ /******************
 This file Copyright 2010-2015 Andrew M. Bishop

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU Affero General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Affero General Public License for more details.

 You should have received a copy of the GNU Affero General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ***************************************/


#ifndef XMLPARSE_H
#define XMLPARSE_H    /*+ To stop multiple inclusions. +*/

#include <stdint.h>
#include <inttypes.h>


/*+ The maximum number of attributes per tag. +*/
#define XMLPARSE_MAX_ATTRS   16

/*+ The maximum number of subtags per tag. +*/
#define XMLPARSE_MAX_SUBTAGS 16

/*+ A flag to indicate the start and/or end of a tag. +*/
#define XMLPARSE_TAG_START    1
#define XMLPARSE_TAG_END      2


/*+ A forward definition of the xmltag +*/
typedef struct _xmltag xmltag;


/*+ A structure to hold the definition of a tag. +*/
struct _xmltag
{
 const char * const name;                            /*+ The name of the tag - must be in lower case. +*/

 const int  nattributes;                             /*+ The number of valid attributes for the tag. +*/
 const char * const attributes[XMLPARSE_MAX_ATTRS];  /*+ The valid attributes for the tag. +*/

 int  (*callback)();                                 /*+ The callback function when the tag is seen. +*/

 const xmltag * const subtags[XMLPARSE_MAX_SUBTAGS]; /*+ The list of valid tags contained within this one (null terminated). +*/
};


/* XML Parser options */

#define XMLPARSE_UNKNOWN_ATTRIBUTES     0x0003
#define XMLPARSE_UNKNOWN_ATTR_ERROR     0x0000 /* Flag an error and exit. */
#define XMLPARSE_UNKNOWN_ATTR_ERRNONAME 0x0001 /* Flag an error and exit unless a namespace is specified. */
#define XMLPARSE_UNKNOWN_ATTR_WARN      0x0002 /* Warn about the problem and continue. */
#define XMLPARSE_UNKNOWN_ATTR_IGNORE    0x0003 /* Ignore the potential problem. */

#define XMLPARSE_RETURN_ATTR_ENCODED    0x0004 /* Return the XML attribute strings without decoding them. */


/* XML parser functions */

int ParseXML(int fd,const xmltag * const *tags,int options);

uint64_t ParseXML_LineNumber(void);

void ParseXML_SetError(const char *format, ...);
char *ParseXML_GetError(void);

char *ParseXML_Decode_Entity_Ref(const char *string);
char *ParseXML_Decode_Char_Ref(const char *string);
char *ParseXML_Encode_Safe_XML(const char *string);

int ParseXML_IsInteger(const char *string);
int ParseXML_IsFloating(const char *string);

/* Macros to simplify the callback functions */

#define XMLPARSE_MESSAGE(tag,message) \
 do \
   { \
    ParseXML_SetError(message " in <%s> tag.",tag); \
    return(1); \
   } \
    while(0)

#define XMLPARSE_INVALID(tag,attribute) \
 do \
   { \
    ParseXML_SetError("Invalid value for '" #attribute "' attribute in <%s> tag.",tag); \
    return(1); \
   } \
    while(0)

#define XMLPARSE_ASSERT_STRING(tag,attribute) \
 do \
   { \
    if(!attribute) \
      { \
       ParseXML_SetError("'" #attribute "' attribute must be specified in <%s> tag.",tag); \
       return(1); \
      } \
   } \
    while(0)

#define XMLPARSE_ASSERT_INTEGER(tag,attribute)  \
 do \
   { \
    if(!attribute || !*attribute || !ParseXML_IsInteger(attribute)) \
      { \
       ParseXML_SetError("'" #attribute "' attribute must be a integer in <%s> tag.",tag); \
       return(1); \
      } \
   } \
    while(0)

#define XMLPARSE_ASSERT_FLOATING(tag,attribute)  \
 do \
   { \
    if(!attribute || !*attribute || !ParseXML_IsFloating(attribute)) \
      { \
       ParseXML_SetError("'" #attribute "' attribute must be a number in <%s> tag.",tag); \
       return(1); \
      } \
   } \
    while(0)


#endif /* XMLPARSE_H */
1	/***************************************
2	A simple XML parser
3
4	Part of the Routino routing software.
5	****************/ /****************
6	This file Copyright 2010-2015 Andrew M. Bishop
7
8	This program is free software: you can redistribute it and/or modify
9	it under the terms of the GNU Affero General Public License as published by
10	the Free Software Foundation, either version 3 of the License, or
11	(at your option) any later version.
12
13	This program is distributed in the hope that it will be useful,
14	but WITHOUT ANY WARRANTY; without even the implied warranty of
15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16	GNU Affero General Public License for more details.
17
18	You should have received a copy of the GNU Affero General Public License
19	along with this program. If not, see <http://www.gnu.org/licenses/>.
20	***************************************/
21
22
23	#ifndef XMLPARSE_H
24	#define XMLPARSE_H /+ To stop multiple inclusions. +/
25
26	#include <stdint.h>
27	#include <inttypes.h>
28
29
30	/+ The maximum number of attributes per tag. +/
31	#define XMLPARSE_MAX_ATTRS 16
32
33	/+ The maximum number of subtags per tag. +/
34	#define XMLPARSE_MAX_SUBTAGS 16
35
36	/+ A flag to indicate the start and/or end of a tag. +/
37	#define XMLPARSE_TAG_START 1
38	#define XMLPARSE_TAG_END 2
39
40
41	/+ A forward definition of the xmltag +/
42	typedef struct _xmltag xmltag;
43
44
45	/+ A structure to hold the definition of a tag. +/
46	struct _xmltag
47	{
48	const char * const name; /+ The name of the tag - must be in lower case. +/
49
50	const int nattributes; /+ The number of valid attributes for the tag. +/
51	const char * const attributes[XMLPARSE_MAX_ATTRS]; /+ The valid attributes for the tag. +/
52
53	int (callback)(); /+ The callback function when the tag is seen. +*/
54
55	const xmltag * const subtags[XMLPARSE_MAX_SUBTAGS]; /+ The list of valid tags contained within this one (null terminated). +/
56	};
57
58
59	/* XML Parser options */
60
61	#define XMLPARSE_UNKNOWN_ATTRIBUTES 0x0003
62	#define XMLPARSE_UNKNOWN_ATTR_ERROR 0x0000 /* Flag an error and exit. */
63	#define XMLPARSE_UNKNOWN_ATTR_ERRNONAME 0x0001 /* Flag an error and exit unless a namespace is specified. */
64	#define XMLPARSE_UNKNOWN_ATTR_WARN 0x0002 /* Warn about the problem and continue. */
65	#define XMLPARSE_UNKNOWN_ATTR_IGNORE 0x0003 /* Ignore the potential problem. */
66
67	#define XMLPARSE_RETURN_ATTR_ENCODED 0x0004 /* Return the XML attribute strings without decoding them. */
68
69
70	/* XML parser functions */
71
72	int ParseXML(int fd,const xmltag * const *tags,int options);
73
74	uint64_t ParseXML_LineNumber(void);
75
76	void ParseXML_SetError(const char *format, ...);
77	char *ParseXML_GetError(void);
78
79	char ParseXML_Decode_Entity_Ref(const char string);
80	char ParseXML_Decode_Char_Ref(const char string);
81	char ParseXML_Encode_Safe_XML(const char string);
82
83	int ParseXML_IsInteger(const char *string);
84	int ParseXML_IsFloating(const char *string);
85
86	/* Macros to simplify the callback functions */
87
88	#define XMLPARSE_MESSAGE(tag,message) \
89	do \
90	{ \
91	ParseXML_SetError(message " in <%s> tag.",tag); \
92	return(1); \
93	} \
94	while(0)
95
96	#define XMLPARSE_INVALID(tag,attribute) \
97	do \
98	{ \
99	ParseXML_SetError("Invalid value for '" #attribute "' attribute in <%s> tag.",tag); \
100	return(1); \
101	} \
102	while(0)
103
104	#define XMLPARSE_ASSERT_STRING(tag,attribute) \
105	do \
106	{ \
107	if(!attribute) \
108	{ \
109	ParseXML_SetError("'" #attribute "' attribute must be specified in <%s> tag.",tag); \
110	return(1); \
111	} \
112	} \
113	while(0)
114
115	#define XMLPARSE_ASSERT_INTEGER(tag,attribute) \
116	do \
117	{ \
118	if(!attribute \|\| !*attribute \|\| !ParseXML_IsInteger(attribute)) \
119	{ \
120	ParseXML_SetError("'" #attribute "' attribute must be a integer in <%s> tag.",tag); \
121	return(1); \
122	} \
123	} \
124	while(0)
125
126	#define XMLPARSE_ASSERT_FLOATING(tag,attribute) \
127	do \
128	{ \
129	if(!attribute \|\| !*attribute \|\| !ParseXML_IsFloating(attribute)) \
130	{ \
131	ParseXML_SetError("'" #attribute "' attribute must be a number in <%s> tag.",tag); \
132	return(1); \
133	} \
134	} \
135	while(0)
136
137
138	#endif /* XMLPARSE_H */