X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fxml-support.h;h=59b4467d082a9290151be86ad8417b3acc1c5049;hb=3cb5a3a16af2cae1a5059b7571c514b3fa575df9;hp=b8377be15472e22b2bebefd71e234c4c2e0c5c15;hpb=a9762ec78a53fbe9209fe1654db42df0cd328d50;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/xml-support.h b/gdb/xml-support.h index b8377be154..59b4467d08 100644 --- a/gdb/xml-support.h +++ b/gdb/xml-support.h @@ -1,6 +1,6 @@ /* Helper routines for parsing XML using Expat. - Copyright (C) 2006, 2007 Free Software Foundation, Inc. + Copyright (C) 2006-2019 Free Software Foundation, Inc. This file is part of GDB. @@ -22,30 +22,14 @@ #define XML_SUPPORT_H #include "gdb_obstack.h" -#include "vec.h" +#include "gdbsupport/xml-utils.h" +#include "gdbsupport/byte-vector.h" +#include "gdbsupport/gdb_optional.h" struct gdb_xml_parser; struct gdb_xml_element; struct gdb_xml_attribute; -/* Support for XInclude. */ - -/* Callback to fetch a new XML file, based on the provided HREF. */ - -typedef char *(*xml_fetch_another) (const char *href, void *baton); - -/* Return a new string which is the expansion of TEXT after processing - tags. FETCHER will be called (with FETCHER_BATON) to - retrieve any new files. DEPTH should be zero on the initial call. - - On failure, this function uses NAME in a warning and returns NULL. - It may throw an exception, but does not for XML parsing - problems. */ - -char *xml_process_xincludes (const char *name, const char *text, - xml_fetch_another fetcher, void *fetcher_baton, - int depth); - /* Return an XML document which was compiled into GDB, from the given FILENAME, or NULL if the file was not compiled in. */ @@ -60,9 +44,25 @@ LONGEST xml_builtin_xfer_partial (const char *filename, gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST offset, LONGEST len); -/* The text of compiled-in XML documents, from xml-builtin.c - (generated). */ -extern const char *xml_builtin[][2]; +/* Support for XInclude. */ + +/* Callback to fetch a new XML file, based on the provided HREF. */ + +typedef gdb::optional (*xml_fetch_another) (const char *href, + void *baton); + +/* Append the expansion of TEXT after processing tags in + RESULT. FETCHER will be called (with FETCHER_BATON) to retrieve + any new files. DEPTH should be zero on the initial call. + + On failure, this function uses NAME in a warning and returns false. + It may throw an exception, but does not for XML parsing + problems. */ + +bool xml_process_xincludes (std::string &result, + const char *name, const char *text, + xml_fetch_another fetcher, void *fetcher_baton, + int depth); /* Simplified XML parser infrastructure. */ @@ -70,11 +70,13 @@ extern const char *xml_builtin[][2]; struct gdb_xml_value { + gdb_xml_value (const char *name_, void *value_) + : name (name_), value (value_) + {} + const char *name; - void *value; + gdb::unique_xmalloc_ptr value; }; -typedef struct gdb_xml_value gdb_xml_value_s; -DEF_VEC_O(gdb_xml_value_s); /* The type of an attribute handler. @@ -142,7 +144,7 @@ enum gdb_xml_element_flag typedef void (gdb_xml_element_start_handler) (struct gdb_xml_parser *parser, const struct gdb_xml_element *element, - void *user_data, VEC(gdb_xml_value_s) *attributes); + void *user_data, std::vector &attributes); /* A handler called at the end of an element. @@ -169,37 +171,34 @@ struct gdb_xml_element gdb_xml_element_end_handler *end_handler; }; -/* Initialize and return a parser. Register a cleanup to destroy the - parser. */ - -struct gdb_xml_parser *gdb_xml_create_parser_and_cleanup - (const char *name, const struct gdb_xml_element *elements, - void *user_data); - -/* Associate DTD_NAME, which must be the name of a compiled-in DTD, - with PARSER. */ - -void gdb_xml_use_dtd (struct gdb_xml_parser *parser, const char *dtd_name); - -/* Invoke PARSER on BUFFER. BUFFER is the data to parse, which - should be NUL-terminated. +/* Parse a XML document. DOCUMENT is the data to parse, which should + be NUL-terminated. If non-NULL, use the compiled-in DTD named + DTD_NAME to drive the parsing. The return value is 0 for success or -1 for error. It may throw, but only if something unexpected goes wrong during parsing; parse errors will be caught, warned about, and reported as failure. */ -int gdb_xml_parse (struct gdb_xml_parser *parser, const char *buffer); +int gdb_xml_parse_quick (const char *name, const char *dtd_name, + const struct gdb_xml_element *elements, + const char *document, void *user_data); /* Issue a debugging message from one of PARSER's handlers. */ void gdb_xml_debug (struct gdb_xml_parser *parser, const char *format, ...) - ATTR_FORMAT (printf, 2, 0); + ATTRIBUTE_PRINTF (2, 3); /* Issue an error message from one of PARSER's handlers, and stop parsing. */ void gdb_xml_error (struct gdb_xml_parser *parser, const char *format, ...) - ATTR_NORETURN ATTR_FORMAT (printf, 2, 0); + ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (2, 3); + +/* Find the attribute named NAME in the set of parsed attributes + ATTRIBUTES. Returns NULL if not found. */ + +struct gdb_xml_value *xml_find_attribute + (std::vector &attributes, const char *name); /* Parse an integer attribute into a ULONGEST. */ @@ -227,4 +226,11 @@ extern gdb_xml_attribute_handler gdb_xml_parse_attr_enum; ULONGEST gdb_xml_parse_ulongest (struct gdb_xml_parser *parser, const char *value); +/* Open FILENAME, read all its text into memory, close it, and return + the text. If something goes wrong, return an uninstantiated optional + and warn. */ + +extern gdb::optional xml_fetch_content_from_file + (const char *filename, void *baton); + #endif