-/*
- * Copyright (C) 2005-2006, Index Data ApS
+/* This file is part of the YAZ toolkit.
+ * Copyright (C) 1995-2009 Index Data
* See the file LICENSE for details.
- *
- * $Id: record_conv.c,v 1.1 2006-05-02 20:47:45 adam Exp $
*/
/**
* \file record_conv.c
#include <config.h>
#endif
-#if HAVE_XML2
-#include <libxml/parser.h>
-#include <libxml/tree.h>
-#endif
-
#include <string.h>
-
+#include <yaz/yaz-iconv.h>
+#include <yaz/marcdisp.h>
#include <yaz/record_conv.h>
#include <yaz/wrbuf.h>
#include <yaz/xmalloc.h>
#include <yaz/nmem.h>
+#include <yaz/tpath.h>
+#include <yaz/z-opac.h>
+
+#if YAZ_HAVE_XML2
+#include <libxml/parser.h>
+#include <libxml/tree.h>
+#include <libxml/xinclude.h>
+#if YAZ_HAVE_XSLT
+#include <libxslt/xsltutils.h>
+#include <libxslt/transform.h>
+#endif
+#if YAZ_HAVE_EXSLT
+#include <libexslt/exslt.h>
+#endif
/** \brief The internal structure for yaz_record_conv_t */
struct yaz_record_conv_struct {
- /** memory for configuration */
+ /** \brief memory for configuration */
NMEM nmem;
- /** conversion rules (allocated using NMEM) */
+ /** \brief conversion rules (allocated using NMEM) */
struct yaz_record_conv_rule *rules;
- /** pointer to last conversion rule pointer in chain */
+ /** \brief pointer to last conversion rule pointer in chain */
struct yaz_record_conv_rule **rules_p;
- /** string buffer for error messages */
+ /** \brief string buffer for error messages */
WRBUF wr_error;
+
+ /** \brief path for opening files */
+ char *path;
};
/** \brief tranformation types (rule types) */
enum YAZ_RECORD_CONV_RULE
{
YAZ_RECORD_CONV_RULE_XSLT,
- YAZ_RECORD_CONV_RULE_MARC_TO_XML,
- YAZ_RECORD_CONV_RULE_XML_TO_MARC
+ YAZ_RECORD_CONV_RULE_MARC
};
/** \brief tranformation info (rule info) */
struct yaz_record_conv_rule {
enum YAZ_RECORD_CONV_RULE which;
union {
+#if YAZ_HAVE_XSLT
struct {
- const char *stylesheet;
+ xmlDocPtr xsp_doc;
} xslt;
+#endif
struct {
- const char *charset;
- } marc_to_xml;
- struct {
- const char *charset;
- } xml_to_marc;
+ const char *input_charset;
+ const char *output_charset;
+ int input_format;
+ int output_format;
+ } marc;
} u;
struct yaz_record_conv_rule *next;
};
+/** \brief reset rules+configuration */
+static void yaz_record_conv_reset(yaz_record_conv_t p)
+{
+
+ struct yaz_record_conv_rule *r;
+ for (r = p->rules; r; r = r->next)
+ {
+ if (r->which == YAZ_RECORD_CONV_RULE_MARC)
+ {
+ ;
+ }
+#if YAZ_HAVE_XSLT
+ else if (r->which == YAZ_RECORD_CONV_RULE_XSLT)
+ {
+ xmlFreeDoc(r->u.xslt.xsp_doc);
+ }
+#endif
+ }
+ wrbuf_rewind(p->wr_error);
+ nmem_reset(p->nmem);
+
+ p->rules = 0;
+
+ p->rules_p = &p->rules;
+}
+
yaz_record_conv_t yaz_record_conv_create()
{
- yaz_record_conv_t p = xmalloc(sizeof(*p));
+ yaz_record_conv_t p = (yaz_record_conv_t) xmalloc(sizeof(*p));
p->nmem = nmem_create();
p->wr_error = wrbuf_alloc();
+ p->rules = 0;
+ p->path = 0;
+
+#if YAZ_HAVE_EXSLT
+ exsltRegisterAll();
+#endif
+ yaz_record_conv_reset(p);
return p;
}
{
if (p)
{
+ yaz_record_conv_reset(p);
nmem_destroy(p->nmem);
- wrbuf_free(p->wr_error, 1);
+ wrbuf_destroy(p->wr_error);
+ xfree(p->path);
xfree(p);
}
}
-#if HAVE_XML2
+/** \brief adds a rule */
static struct yaz_record_conv_rule *add_rule(yaz_record_conv_t p,
enum YAZ_RECORD_CONV_RULE type)
{
- struct yaz_record_conv_rule *r = nmem_malloc(p->nmem, sizeof(*r));
+ struct yaz_record_conv_rule *r = (struct yaz_record_conv_rule *)
+ nmem_malloc(p->nmem, sizeof(*r));
r->which = type;
r->next = 0;
*p->rules_p = r;
return r;
}
-static void yaz_record_conv_reset(yaz_record_conv_t p)
-{
- wrbuf_rewind(p->wr_error);
- nmem_reset(p->nmem);
- p->rules = 0;
- p->rules_p = &p->rules;
-}
-
+/** \brief parse 'xslt' conversion node */
static int conv_xslt(yaz_record_conv_t p, const xmlNode *ptr)
{
+#if YAZ_HAVE_XSLT
struct _xmlAttr *attr;
const char *stylesheet = 0;
stylesheet = (const char *) attr->children->content;
else
{
- wrbuf_printf(p->wr_error, "Bad attribute '%s'."
+ wrbuf_printf(p->wr_error, "Bad attribute '%s'"
"Expected stylesheet.", attr->name);
return -1;
}
}
- if (stylesheet)
+ if (!stylesheet)
{
- struct yaz_record_conv_rule *r =
- add_rule(p, YAZ_RECORD_CONV_RULE_XSLT);
- r->u.xslt.stylesheet = nmem_strdup(p->nmem, stylesheet);
- return 0;
+ wrbuf_printf(p->wr_error, "Element <xslt>: "
+ "attribute 'stylesheet' expected");
+ return -1;
}
- wrbuf_printf(p->wr_error, "Missing attribute 'stylesheet'");
+ else
+ {
+ char fullpath[1024];
+ xsltStylesheetPtr xsp;
+ xmlDocPtr xsp_doc;
+ if (!yaz_filepath_resolve(stylesheet, p->path, 0, fullpath))
+ {
+ wrbuf_printf(p->wr_error, "Element <xslt stylesheet=\"%s\"/>:"
+ " could not locate stylesheet '%s'",
+ stylesheet, fullpath);
+ if (p->path)
+ wrbuf_printf(p->wr_error, " with path '%s'", p->path);
+
+ return -1;
+ }
+ xsp_doc = xmlParseFile(fullpath);
+ if (!xsp_doc)
+ {
+ wrbuf_printf(p->wr_error, "Element: <xslt stylesheet=\"%s\"/>:"
+ " xml parse failed: %s", stylesheet, fullpath);
+ if (p->path)
+ wrbuf_printf(p->wr_error, " with path '%s'", p->path);
+ return -1;
+ }
+ xsp = xsltParseStylesheetDoc(xsp_doc);
+ if (!xsp)
+ {
+ wrbuf_printf(p->wr_error, "Element: <xslt stylesheet=\"%s\"/>:"
+ " xslt parse failed: %s", stylesheet, fullpath);
+ if (p->path)
+ wrbuf_printf(p->wr_error, " with path '%s'", p->path);
+ wrbuf_printf(p->wr_error, " ("
+#if YAZ_HAVE_EXSLT
+
+ "EXSLT enabled"
+#else
+ "EXSLT not supported"
+#endif
+ ")");
+ return -1;
+ }
+ else
+ {
+ struct yaz_record_conv_rule *r =
+ add_rule(p, YAZ_RECORD_CONV_RULE_XSLT);
+ r->u.xslt.xsp_doc = xmlCopyDoc(xsp_doc, 1);
+ xsltFreeStylesheet(xsp); /* will free xsp_doc */
+ }
+ }
+ return 0;
+#else
+ wrbuf_printf(p->wr_error, "xslt unsupported."
+ " YAZ compiled without XSLT support");
return -1;
+#endif
}
-static int conv_marc_to_xml(yaz_record_conv_t p, const xmlNode *ptr)
+/** \brief parse 'marc' conversion node */
+static int conv_marc(yaz_record_conv_t p, const xmlNode *ptr)
{
struct _xmlAttr *attr;
- const char *charset = 0;
+ const char *input_charset = 0;
+ const char *output_charset = 0;
+ const char *input_format = 0;
+ const char *output_format = 0;
+ int input_format_mode = 0;
+ int output_format_mode = 0;
struct yaz_record_conv_rule *r;
for (attr = ptr->properties; attr; attr = attr->next)
{
- if (!xmlStrcmp(attr->name, BAD_CAST "charset") &&
+ if (!xmlStrcmp(attr->name, BAD_CAST "inputcharset") &&
+ attr->children && attr->children->type == XML_TEXT_NODE)
+ input_charset = (const char *) attr->children->content;
+ else if (!xmlStrcmp(attr->name, BAD_CAST "outputcharset") &&
attr->children && attr->children->type == XML_TEXT_NODE)
- charset = (const char *) attr->children->content;
+ output_charset = (const char *) attr->children->content;
+ else if (!xmlStrcmp(attr->name, BAD_CAST "inputformat") &&
+ attr->children && attr->children->type == XML_TEXT_NODE)
+ input_format = (const char *) attr->children->content;
+ else if (!xmlStrcmp(attr->name, BAD_CAST "outputformat") &&
+ attr->children && attr->children->type == XML_TEXT_NODE)
+ output_format = (const char *) attr->children->content;
else
{
- wrbuf_printf(p->wr_error, "Bad attribute '%s'."
- "Expected charset.", attr->name);
+ wrbuf_printf(p->wr_error, "Element <marc>: expected attributes"
+ "'inputformat', 'inputcharset', 'outputformat' or"
+ " 'outputcharset', got attribute '%s'",
+ attr->name);
return -1;
}
}
- r = add_rule(p, YAZ_RECORD_CONV_RULE_MARC_TO_XML);
- if (charset)
- r->u.marc_to_xml.charset = nmem_strdup(p->nmem, charset);
+ if (!input_format)
+ {
+ wrbuf_printf(p->wr_error, "Element <marc>: "
+ "attribute 'inputformat' required");
+ return -1;
+ }
+ else if (!strcmp(input_format, "marc"))
+ {
+ input_format_mode = YAZ_MARC_ISO2709;
+ }
+ else if (!strcmp(input_format, "xml"))
+ {
+ input_format_mode = YAZ_MARC_MARCXML;
+ /** Libxml2 generates UTF-8 encoding by default .
+ So we convert from UTF-8 to outputcharset (if defined)
+ */
+ if (!input_charset && output_charset)
+ input_charset = "utf-8";
+ }
+ else
+ {
+ wrbuf_printf(p->wr_error, "Element <marc inputformat='%s'>: "
+ " Unsupported input format"
+ " defined by attribute value",
+ input_format);
+ return -1;
+ }
+
+ if (!output_format)
+ {
+ wrbuf_printf(p->wr_error,
+ "Element <marc>: attribute 'outputformat' required");
+ return -1;
+ }
+ else if (!strcmp(output_format, "line"))
+ {
+ output_format_mode = YAZ_MARC_LINE;
+ }
+ else if (!strcmp(output_format, "marcxml"))
+ {
+ output_format_mode = YAZ_MARC_MARCXML;
+ if (input_charset && !output_charset)
+ output_charset = "utf-8";
+ }
+ else if (!strcmp(output_format, "marc"))
+ {
+ output_format_mode = YAZ_MARC_ISO2709;
+ }
+ else if (!strcmp(output_format, "marcxchange"))
+ {
+ output_format_mode = YAZ_MARC_XCHANGE;
+ if (input_charset && !output_charset)
+ output_charset = "utf-8";
+ }
else
- r->u.marc_to_xml.charset = 0;
+ {
+ wrbuf_printf(p->wr_error, "Element <marc outputformat='%s'>: "
+ " Unsupported output format"
+ " defined by attribute value",
+ output_format);
+ return -1;
+ }
+ if (input_charset && output_charset)
+ {
+ yaz_iconv_t cd = yaz_iconv_open(output_charset, input_charset);
+ if (!cd)
+ {
+ wrbuf_printf(p->wr_error,
+ "Element <marc inputcharset='%s' outputcharset='%s'>:"
+ " Unsupported character set mapping"
+ " defined by attribute values",
+ input_charset, output_charset);
+ return -1;
+ }
+ yaz_iconv_close(cd);
+ }
+ else if (input_charset)
+ {
+ wrbuf_printf(p->wr_error, "Element <marc>: "
+ "attribute 'outputcharset' missing");
+ return -1;
+ }
+ else if (output_charset)
+ {
+ wrbuf_printf(p->wr_error, "Element <marc>: "
+ "attribute 'inputcharset' missing");
+ return -1;
+ }
+ r = add_rule(p, YAZ_RECORD_CONV_RULE_MARC);
+
+ r->u.marc.input_charset = nmem_strdup(p->nmem, input_charset);
+ r->u.marc.output_charset = nmem_strdup(p->nmem, output_charset);
+ r->u.marc.input_format = input_format_mode;
+ r->u.marc.output_format = output_format_mode;
return 0;
}
-static int conv_xml_to_marc(yaz_record_conv_t p, const xmlNode *ptr)
+int yaz_record_conv_configure(yaz_record_conv_t p, const xmlNode *ptr)
{
- struct _xmlAttr *attr;
- const char *charset = 0;
- struct yaz_record_conv_rule *r;
+ yaz_record_conv_reset(p);
- for (attr = ptr->properties; attr; attr = attr->next)
- {
- if (!xmlStrcmp(attr->name, BAD_CAST "charset") &&
- attr->children && attr->children->type == XML_TEXT_NODE)
- charset = (const char *) attr->children->content;
- else
+ /* parsing element children */
+ for (ptr = ptr->children; ptr; ptr = ptr->next)
{
- wrbuf_printf(p->wr_error, "Bad attribute '%s'."
- "Expected charset.", attr->name);
- return -1;
+ if (ptr->type != XML_ELEMENT_NODE)
+ continue;
+ if (!strcmp((const char *) ptr->name, "xslt"))
+ {
+ if (conv_xslt(p, ptr))
+ return -1;
+ }
+ else if (!strcmp((const char *) ptr->name, "marc"))
+ {
+ if (conv_marc(p, ptr))
+ return -1;
+ }
+ else
+ {
+ wrbuf_printf(p->wr_error, "Element <backend>: expected "
+ "<marc> or <xslt> element, got <%s>"
+ , ptr->name);
+ return -1;
+ }
}
- }
- r = add_rule(p, YAZ_RECORD_CONV_RULE_XML_TO_MARC);
- if (charset)
- r->u.xml_to_marc.charset = nmem_strdup(p->nmem, charset);
- else
- r->u.xml_to_marc.charset = 0;
return 0;
}
+static int yaz_record_conv_record_rule(yaz_record_conv_t p,
+ struct yaz_record_conv_rule *r,
+ const char *input_record_buf,
+ size_t input_record_len,
+ WRBUF output_record);
-int yaz_record_conv_configure(yaz_record_conv_t p, const void *ptr_v)
+int yaz_record_conv_opac_record(yaz_record_conv_t p,
+ Z_OPACRecord *input_record,
+ WRBUF output_record)
{
- const xmlNode *ptr = ptr_v;
+ int ret = 0;
+ struct yaz_record_conv_rule *r = p->rules;
+ if (!r || r->which != YAZ_RECORD_CONV_RULE_MARC)
+ ret = -1; /* no marc rule so we can't do OPAC */
+ else
+ {
+ WRBUF res = wrbuf_alloc();
+ yaz_marc_t mt = yaz_marc_create();
+ yaz_iconv_t cd = yaz_iconv_open(r->u.marc.output_charset,
+ r->u.marc.input_charset);
+
+ wrbuf_rewind(p->wr_error);
+ yaz_marc_xml(mt, r->u.marc.output_format);
+
+ yaz_marc_iconv(mt, cd);
+
+ yaz_opac_decode_wrbuf(mt, input_record, res);
+ if (ret != -1)
+ {
+ ret = yaz_record_conv_record_rule(p,
+ r->next,
+ wrbuf_buf(res), wrbuf_len(res),
+ output_record);
+ }
+ yaz_marc_destroy(mt);
+ if (cd)
+ yaz_iconv_close(cd);
+ wrbuf_destroy(res);
+ }
+ return ret;
+}
- yaz_record_conv_reset(p);
+int yaz_record_conv_record(yaz_record_conv_t p,
+ const char *input_record_buf,
+ size_t input_record_len,
+ WRBUF output_record)
+{
+ return yaz_record_conv_record_rule(p, p->rules,
+ input_record_buf,
+ input_record_len, output_record);
+}
- if (ptr && ptr->type == XML_ELEMENT_NODE &&
- !strcmp((const char *) ptr->name, "convert"))
+static int yaz_record_conv_record_rule(yaz_record_conv_t p,
+ struct yaz_record_conv_rule *r,
+ const char *input_record_buf,
+ size_t input_record_len,
+ WRBUF output_record)
+{
+ int ret = 0;
+ WRBUF record = output_record; /* pointer transfer */
+ wrbuf_rewind(p->wr_error);
+
+ wrbuf_write(record, input_record_buf, input_record_len);
+ for (; ret == 0 && r; r = r->next)
{
- for (ptr = ptr->children; ptr; ptr = ptr->next)
+ if (r->which == YAZ_RECORD_CONV_RULE_MARC)
{
- if (ptr->type != XML_ELEMENT_NODE)
- continue;
- if (!strcmp((const char *) ptr->name, "xslt"))
+ yaz_iconv_t cd =
+ yaz_iconv_open(r->u.marc.output_charset,
+ r->u.marc.input_charset);
+ yaz_marc_t mt = yaz_marc_create();
+
+ yaz_marc_xml(mt, r->u.marc.output_format);
+
+ if (cd)
+ yaz_marc_iconv(mt, cd);
+ if (r->u.marc.input_format == YAZ_MARC_ISO2709)
{
- if (conv_xslt(p, ptr))
- return -1;
+ int sz = yaz_marc_read_iso2709(mt, wrbuf_buf(record),
+ wrbuf_len(record));
+ if (sz > 0)
+ ret = 0;
+ else
+ ret = -1;
}
- else if (!strcmp((const char *) ptr->name, "marc_to_xml"))
+ else if (r->u.marc.input_format == YAZ_MARC_MARCXML)
{
- if (conv_marc_to_xml(p, ptr))
- return -1;
+ xmlDocPtr doc = xmlParseMemory(wrbuf_buf(record),
+ wrbuf_len(record));
+ if (!doc)
+ {
+ wrbuf_printf(p->wr_error, "xmlParseMemory failed");
+ ret = -1;
+ }
+ else
+ {
+ ret = yaz_marc_read_xml(mt, xmlDocGetRootElement(doc));
+ if (ret)
+ wrbuf_printf(p->wr_error, "yaz_marc_read_xml failed");
+ }
+ xmlFreeDoc(doc);
}
- else if (!strcmp((const char *) ptr->name, "xml_to_marc"))
+ else
{
- if (conv_xml_to_marc(p, ptr))
- return -1;
+ wrbuf_printf(p->wr_error, "unsupported input format");
+ ret = -1;
+ }
+ if (ret == 0)
+ {
+ wrbuf_rewind(record);
+ ret = yaz_marc_write_mode(mt, record);
+ if (ret)
+ wrbuf_printf(p->wr_error, "yaz_marc_write_mode failed");
+ }
+ if (cd)
+ yaz_iconv_close(cd);
+ yaz_marc_destroy(mt);
+ }
+#if YAZ_HAVE_XSLT
+ else if (r->which == YAZ_RECORD_CONV_RULE_XSLT)
+ {
+ xmlDocPtr doc = xmlParseMemory(wrbuf_buf(record),
+ wrbuf_len(record));
+ if (!doc)
+ {
+ wrbuf_printf(p->wr_error, "xmlParseMemory failed");
+ ret = -1;
}
else
{
- wrbuf_printf(p->wr_error, "Bad element '%s'."
- "Expected xslt, marc_to_xml,...", ptr->name);
- return -1;
+ xmlDocPtr xsp_doc = xmlCopyDoc(r->u.xslt.xsp_doc, 1);
+ xsltStylesheetPtr xsp = xsltParseStylesheetDoc(xsp_doc);
+ xmlDocPtr res = xsltApplyStylesheet(xsp, doc, 0);
+ if (res)
+ {
+ xmlChar *out_buf = 0;
+ int out_len;
+
+#if YAZ_HAVE_XSLTSAVERESULTTOSTRING
+ xsltSaveResultToString(&out_buf, &out_len, res, xsp);
+#else
+ xmlDocDumpFormatMemory (res, &out_buf, &out_len, 1);
+#endif
+ if (!out_buf)
+ {
+ wrbuf_printf(p->wr_error,
+ "xsltSaveResultToString failed");
+ ret = -1;
+ }
+ else
+ {
+ wrbuf_rewind(record);
+ wrbuf_write(record, (const char *) out_buf, out_len);
+
+ xmlFree(out_buf);
+ }
+ xmlFreeDoc(res);
+ }
+ else
+ {
+ wrbuf_printf(p->wr_error, "xsltApplyStylesheet failed");
+ ret = -1;
+ }
+ xmlFreeDoc(doc);
+ xsltFreeStylesheet(xsp); /* frees xsp_doc too */
}
}
+#endif
}
- else
- {
- wrbuf_printf(p->wr_error, "Missing 'convert' element");
- return -1;
- }
- return 0;
+ return ret;
}
-#else
-/* HAVE_XML2 */
-int yaz_record_conv_configure(yaz_record_conv_t p, const void *ptr_v)
+const char *yaz_record_conv_get_error(yaz_record_conv_t p)
{
- wrbuf_rewind(p->wr_error);
- wrbuf_printf(p->wr_error, "No XML support for yaz_record_conv");
- return -1;
+ return wrbuf_cstr(p->wr_error);
}
-#endif
-
-const char *yaz_record_conv_get_error(yaz_record_conv_t p)
+void yaz_record_conv_set_path(yaz_record_conv_t p, const char *path)
{
- return wrbuf_buf(p->wr_error);
+ xfree(p->path);
+ p->path = 0;
+ if (path)
+ p->path = xstrdup(path);
}
+#endif
/*
* Local variables:
* c-basic-offset: 4
+ * c-file-style: "Stroustrup"
* indent-tabs-mode: nil
* End:
* vim: shiftwidth=4 tabstop=8 expandtab
projects / yaz-moved-to-github.git / blobdiff