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27 /* $Id: marcdisp.h,v 1.27 2007-01-24 15:13:20 adam Exp $ */
31 * \brief MARC conversion
37 #include <yaz/yconfig.h>
39 #include <yaz/wrbuf.h>
42 #include <yaz/xmltypes.h>
46 /** \brief a yaz_marc_t handle (private content) */
47 typedef struct yaz_marc_t_ *yaz_marc_t;
49 /** \brief construct yaz_marc_t handle */
50 YAZ_EXPORT yaz_marc_t yaz_marc_create(void);
52 /** \brief destroy yaz_marc_t handle */
53 YAZ_EXPORT void yaz_marc_destroy(yaz_marc_t mt);
55 /** \brief set XML mode YAZ_MARC_LINE, YAZ_MARC_SIMPLEXML, ... */
56 YAZ_EXPORT void yaz_marc_xml(yaz_marc_t mt, int xmlmode);
58 /** \brief Output format: Line-format */
59 #define YAZ_MARC_LINE 0
60 /** \brief Output format: simplexml (no longer supported) */
61 #define YAZ_MARC_SIMPLEXML 1
62 /** \brief Output format: OAI-MARC (no longer supported) */
63 #define YAZ_MARC_OAIMARC 2
64 /** \brief Output format: MARCXML */
65 #define YAZ_MARC_MARCXML 3
66 /** \brief Output format: ISO2709 */
67 #define YAZ_MARC_ISO2709 4
68 /** \brief Output format: MarcXchange */
69 #define YAZ_MARC_XCHANGE 5
70 /** \brief Output format: check only (no marc output) */
71 #define YAZ_MARC_CHECK 6
73 /** \brief supply iconv handle for character set conversion .. */
74 YAZ_EXPORT void yaz_marc_iconv(yaz_marc_t mt, yaz_iconv_t cd);
76 /** \brief set debug level
78 \param level level, where 0=lowest, 1 more debug, 2 even more
80 YAZ_EXPORT void yaz_marc_debug(yaz_marc_t mt, int level);
82 /** \brief decodes ISO2709 buffer using straight buffers
84 \param buf input buffer
85 \param bsize size of buffer or (-1 if "any size")
86 \param result result to be stored here
87 \param rsize size of result (memory "owned" by yaz_marc_mt handle)
89 Decodes MARC in buf of size bsize.
90 On success, result in *result with size *rsize.
91 Returns -1 on error, or size of input record (>0) if OK
93 YAZ_EXPORT int yaz_marc_decode_buf(yaz_marc_t mt, const char *buf, int bsize,
94 char **result, int *rsize);
96 /** \brief decodes ISO2709/MARC buffer and stores result in WRBUF
98 \param buf input buffer
99 \param bsize size of buffer (-1 if "any size")
100 \param wrbuf WRBUF for output
102 Decodes MARC in buf of size bsize.
103 On success, result in wrbuf
104 Returns -1 on error, or size of input record (>0) if OK
106 YAZ_EXPORT int yaz_marc_decode_wrbuf(yaz_marc_t mt, const char *buf,
107 int bsize, WRBUF wrbuf);
109 /** \brief depricated */
110 YAZ_EXPORT int marc_display(const char *buf, FILE *outf);
111 /** \brief depricated */
112 YAZ_EXPORT int marc_display_ex(const char *buf, FILE *outf, int debug);
113 /** \brief depricated */
114 YAZ_EXPORT int marc_display_exl(const char *buf, FILE *outf, int debug,
116 /** \brief depricated */
117 YAZ_EXPORT int marc_display_wrbuf(const char *buf, WRBUF wr, int debug,
119 /** \brief depricated */
120 YAZ_EXPORT int yaz_marc_decode(const char *buf, WRBUF wr,
121 int debug, int bsize, int xml);
123 YAZ_EXPORT void yaz_marc_subfield_str(yaz_marc_t mt, const char *s);
124 YAZ_EXPORT void yaz_marc_endline_str(yaz_marc_t mt, const char *s);
126 /** \brief modifies part of the MARC leader */
127 YAZ_EXPORT void yaz_marc_modify_leader(yaz_marc_t mt, size_t off,
130 /** \brief like atoi(3) except that it reads exactly len characters */
131 YAZ_EXPORT int atoi_n(const char *buf, int len);
133 /** \brief like atoi_n but checks for proper formatting
134 \param buf buffer to read values from
135 \param size size of buffer
136 \param val value of decimal number (if successful)
137 \retval 0 no value found (non-digits found)
138 \retval 1 value found and *val holds value
141 int atoi_n_check(const char *buf, int size, int *val);
143 /** \brief MARC control char: record separator (29 Dec, 1D Hex) */
144 #define ISO2709_RS 035
145 /** \brief MARC control char: field separator (30 Dec, 1E Hex) */
146 #define ISO2709_FS 036
147 /** \brief MARC control char: identifier-field separator (31 Dec, 1F Hex) */
148 #define ISO2709_IDFS 037
150 /** \brief read ISO2709/MARC record from buffer
152 \param buf ISO2709 buffer of size bsize
153 \param bsize size of buffer (-1 for unlimited size)
155 Parses ISO2709 record from supplied buffer
156 Returns > 0 for OK (same as length), -1=ERROR
158 YAZ_EXPORT int yaz_marc_read_iso2709(yaz_marc_t mt,
159 const char *buf, int bsize);
161 /** \brief read MARC lineformat from stream
163 \param getbyte get one byte handler
164 \param ungetbyte unget one byte handler
165 \param client_data opaque data for handers
167 Parses MARC line record from stream
168 Returns > 0 for OK (same as length), -1=ERROR
171 int yaz_marc_read_line(yaz_marc_t mt,
172 int (*getbyte)(void *client_data),
173 void (*ungetbyte)(int b, void *client_data),
176 /** \brief parses MARCXML/MarcXchange record from xmlNode pointer
178 \param ptr is a pointer to root xml node
180 Returns 0=OK, -1=ERROR
182 YAZ_EXPORT int yaz_marc_read_xml(yaz_marc_t mt, const xmlNode *ptr);
184 /** \brief writes record in line format
186 \param wrbuf WRBUF for output
188 Returns 0=OK, -1=ERROR
190 YAZ_EXPORT int yaz_marc_write_line(yaz_marc_t mt, WRBUF wrbuf);
192 /** \brief writes record in MARCXML format
194 \param wrbuf WRBUF for output
196 Sets leader[9]='a' . Returns 0=OK, -1=ERROR .
198 YAZ_EXPORT int yaz_marc_write_marcxml(yaz_marc_t mt, WRBUF wrbuf);
200 /** \brief writes record in MarcXchange XML
202 \param wrbuf WRBUF for output
203 \param format record format (e.g. "MARC21")
204 \param type record type (e.g. Bibliographic)
206 Returns 0=OK, -1=ERROR
208 YAZ_EXPORT int yaz_marc_write_marcxchange(yaz_marc_t mt, WRBUF wrbuf,
212 /** \brief writes record in ISO2709 format
214 \param wrbuf WRBUF for output
215 Returns 0=OK, -1=ERROR
217 YAZ_EXPORT int yaz_marc_write_iso2709(yaz_marc_t mt, WRBUF wrbuf);
219 /** \brief writes record in mode - given by yaz_marc_xml mode
221 \param wrbuf WRBUF for output
222 This function calls yaz_marc_write_iso2709, yaz_marc_write_marcxml,
223 etc.. depending on mode given by yaz_marc_xml.
224 Returns 0=OK, -1=ERROR
226 YAZ_EXPORT int yaz_marc_write_mode(yaz_marc_t mt, WRBUF wrbuf);
228 /** \brief writes MARC record as libxml2 tree
230 \param root_ptr pointer to record node
231 \param ns namespace of record (such as "http://www.loc.gov/MARC21/slim")
232 \param format MarcXchange format (NULL for none)
233 \param type MarcXchange format (NULL for none)
234 \retval 0 Creation successful and *root_ptr is "record" node
238 int yaz_marc_write_xml(yaz_marc_t mt, xmlNode **root_ptr,
243 /** \brief sets leader spec (for modifying bytes in 24 byte leader)
249 Spec takes form pos=val,pos=val,...
250 where value is either a number (decimal char value) or a
251 string in 'a', e.g. 9='a'
254 YAZ_EXPORT int yaz_marc_leader_spec(yaz_marc_t mt, const char *leader_spec);
257 /** \brief sets leader, validates it, and returns important values
259 \param leader of the 24 byte leader to be set
260 \param indicator_length indicator length (returned value)
261 \param identifier_length identifier length (returned value)
262 \param base_address base address (returned value)
263 \param length_data_entry length of data entry (returned value)
264 \param length_starting length of starting
265 \param length_implementation length of implementation defined data
268 void yaz_marc_set_leader(yaz_marc_t mt, const char *leader,
269 int *indicator_length,
270 int *identifier_length,
272 int *length_data_entry,
273 int *length_starting,
274 int *length_implementation);
277 /** \brief adds MARC comment string
279 \param comment comment to be added)
282 void yaz_marc_add_comment(yaz_marc_t mt, char *comment);
284 /** \brief adds MARC annotation - printf interface
286 \param fmt printf format string
289 void yaz_marc_cprintf(yaz_marc_t mt, const char *fmt, ...);
291 /** \brief adds subfield to MARC structure
293 \param code_data code data buffer
294 \param code_data_len length of code data
297 void yaz_marc_add_subfield(yaz_marc_t mt,
298 const char *code_data, size_t code_data_len);
301 /** \brief adds controlfield to MARC structure
303 \param tag (e.g. "001"
304 \param data value for this tag
305 \param data_len length of data
308 void yaz_marc_add_controlfield(yaz_marc_t mt, const char *tag,
309 const char *data, size_t data_len);
312 /** \brief adds controlfield to MARC structure using xml Nodes
314 \param ptr_tag value of tag (TEXT xmlNode)
315 \param ptr_data value of data (TEXT xmlNode)
318 void yaz_marc_add_controlfield_xml(yaz_marc_t mt, const xmlNode *ptr_tag,
319 const xmlNode *ptr_data);
322 /** \brief adds datafield to MARC structure using strings
324 \param tag value of tag as string
325 \param indicator indicator string
326 \param indicator_len length of indicator string
329 void yaz_marc_add_datafield(yaz_marc_t mt, const char *tag,
330 const char *indicator, size_t indicator_len);
332 /** \brief adds datafield to MARC structure using xml Nodes
334 \param ptr_tag value of tag (TEXT xmlNode)
335 \param indicator indicator string
336 \param indicator_len length of indicator string
339 void yaz_marc_add_datafield_xml(yaz_marc_t mt, const xmlNode *ptr_tag,
340 const char *indicator, size_t indicator_len);
343 /** \brief returns memory for MARC handle
345 \retval NMEM handle for MARC system
348 NMEM yaz_marc_get_nmem(yaz_marc_t mt);
350 /** \brief clears memory and MARC record
354 void yaz_marc_reset(yaz_marc_t mt);
356 /** \brief gets debug level for MARC system
360 int yaz_marc_get_debug(yaz_marc_t mt);
362 /** \brief convert MARC format type to format type(YAZ_MARC_..)
364 \returns -1 if arg is not a known format; YAZ_MARC_.. otherwise (OK)
367 int yaz_marc_decode_formatstr(const char *arg);
369 /** \brief enable writing of MARC XML records using Libxml2
371 \param enable 0=disable, 1=enable
374 void yaz_marc_write_using_libxml2(yaz_marc_t mt, int enable);
382 * indent-tabs-mode: nil
384 * vim: shiftwidth=4 tabstop=8 expandtab