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-rw-r--r--support/texlab/crates/bibutils_sys/src/url.c316
1 files changed, 0 insertions, 316 deletions
diff --git a/support/texlab/crates/bibutils_sys/src/url.c b/support/texlab/crates/bibutils_sys/src/url.c
deleted file mode 100644
index b7a9c9e96f..0000000000
--- a/support/texlab/crates/bibutils_sys/src/url.c
+++ /dev/null
@@ -1,316 +0,0 @@
-/*
- * url.c
- *
- * doi_to_url()
- * Handle outputing DOI as a URL (Endnote and RIS formats)
- * 1) Append https://doi.org as necessary
- * 2) Check for overlap with pre-existing URL for the DOI
- *
- * is_doi()
- * Check for DOI buried in another field.
- *
- * Copyright (c) Chris Putnam 2008-2019
- *
- * Source code released under the GPL version 2
- *
- */
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#include "bibutils.h"
-#include "url.h"
-#include "msvc_fix.h"
-
-static void
-construct_url( char *prefix, str *id, str *id_url, char sep )
-{
- if ( !strncasecmp( str_cstr( id ), "http:", 5 ) )
- str_strcpy( id_url, id );
- else {
- str_strcpyc( id_url, prefix );
- if ( sep!='\0' ) {
- if ( id->data[0]!=sep ) str_addchar( id_url, sep );
- }
- str_strcat( id_url, id );
- }
-}
-
-static int
-url_exists( fields *f, char *urltag, str *doi_url )
-{
- int i, n;
- if ( urltag ) {
- n = fields_num( f );
- for ( i=0; i<n; ++i ) {
- if ( strcmp( fields_tag( f, i, FIELDS_CHRP ), urltag ) ) continue;
- if ( strcmp( fields_value( f, i, FIELDS_CHRP ), str_cstr( doi_url ) ) ) continue;
- return 1;
- }
- }
- return 0;
-}
-
-static void
-xxx_to_url( fields *f, int n, char *http_prefix, char *urltag, str *xxx_url, char sep )
-{
- str_empty( xxx_url );
- construct_url( http_prefix, fields_value( f, n, FIELDS_STRP ), xxx_url, sep );
- if ( url_exists( f, urltag, xxx_url ) )
- str_empty( xxx_url );
-}
-void
-doi_to_url( fields *f, int n, char *urltag, str *url )
-{
- xxx_to_url( f, n, "https://doi.org", urltag, url, '/' );
-}
-void
-jstor_to_url( fields *f, int n, char *urltag, str *url )
-{
- xxx_to_url( f, n, "http://www.jstor.org/stable", urltag, url, '/' );
-}
-void
-pmid_to_url( fields *f, int n, char *urltag, str *url )
-{
- xxx_to_url( f, n, "http://www.ncbi.nlm.nih.gov/pubmed", urltag, url, '/' );
-}
-void
-pmc_to_url( fields *f, int n, char *urltag, str *url )
-{
- xxx_to_url( f, n, "http://www.ncbi.nlm.nih.gov/pmc/articles", urltag, url, '/' );
-}
-void
-arxiv_to_url( fields *f, int n, char *urltag, str *url )
-{
- xxx_to_url( f, n, "http://arxiv.org/abs", urltag, url, '/' );
-}
-void
-mrnumber_to_url( fields *f, int n, char *urltag, str *url )
-{
- xxx_to_url( f, n, "http://www.ams.org/mathscinet-getitem?mr=", urltag, url, '\0' );
-}
-
-/* Rules for the pattern:
- * '#' = number
- * isalpha() = match precisely (matchcase==1) or match regardless of case
- * (matchcase==0)
- * all others must match precisely
- */
-static int
-string_pattern( char *s, char *pattern, int matchcase )
-{
- int patlen, match, i;
- patlen = strlen( pattern );
- if ( strlen( s ) < patlen ) return 0; /* too short */
- for ( i=0; i<patlen; ++i ) {
- match = 0;
- if ( pattern[i]=='#' ) {
- if ( isdigit( (unsigned char)s[i] ) ) match = 1;
- } else if ( !matchcase && isalpha( (unsigned char)pattern[i] ) ) {
- if ( tolower((unsigned char)pattern[i])==tolower((unsigned char)s[i])) match = 1;
- } else {
- if ( pattern[i] == s[i] ) match = 1;
- }
- if ( !match ) return 0;
- }
- return 1;
-}
-
-/* science direct is now doing "M3 - doi: DOI: 10.xxxx/xxxxx" */
-/* elsevier is doing "DO - https://doi.org/xx.xxxx/xxxx..." */
-int
-is_doi( char *s )
-{
- if ( string_pattern( s, "##.####/", 0 ) ) return 0;
- if ( string_pattern( s, "doi:##.####/", 0 ) ) return 4;
- if ( string_pattern( s, "doi: ##.####/", 0 ) ) return 5;
- if ( string_pattern( s, "doi: DOI: ##.####/", 0 ) ) return 10;
- if ( string_pattern( s, "https://doi.org/##.####/", 0 ) ) return 16;
- return -1;
-}
-
-/* determine if string has the header of a Universal Resource Identifier
- *
- * returns -1, if not true
- * returns offset that skips over the URI scheme, if true
- */
-int
-is_uri_remote_scheme( char *p )
-{
- char *scheme[] = { "http:", "https:", "ftp:", "git:", "gopher:" };
- int schemelen[] = { 5, 6, 4, 4, 7 };
- int i, nschemes = sizeof( scheme ) / sizeof( scheme[0] );
- for ( i=0; i<nschemes; ++i ) {
- if ( !strncasecmp( p, scheme[i], schemelen[i] ) ) return schemelen[i];
- }
- return -1;
-}
-
-int
-is_reference_database( char *p )
-{
- char *scheme[] = { "arXiv:", "pubmed:", "medline:", "isi:" };
- int schemelen[] = { 6, 7, 8, 4 };
- int i, nschemes = sizeof( scheme ) / sizeof( scheme[0] );
- for ( i=0; i<nschemes; ++i ) {
- if ( !strncasecmp( p, scheme[i], schemelen[i] ) ) return schemelen[i];
- }
- return -1;
-}
-
-/* many fields have been abused to embed URLs, DOIs, etc. */
-int
-is_embedded_link( char *s )
-{
- if ( is_uri_remote_scheme( s ) != -1 ) return 1;
- if ( is_reference_database( s ) != -1 ) return 1;
- if ( is_doi( s ) !=-1 ) return 1;
- return 0;
-}
-
-typedef struct url_t {
- char *tag;
- char *prefix;
- int offset;
-} url_t;
-
-static url_t prefixes[] = {
- /* 00000000001111111112222222222333333333344444444445 */
- /* 12345678901234567890123456789012345678901234567890 */
- { "ARXIV", "http://arxiv.org/abs/", 21 },
- { "DOI", "https://doi.org/", 16 },
- { "JSTOR", "http://www.jstor.org/stable/", 28 },
- { "MRNUMBER", "http://www.ams.org/mathscinet-getitem?mr=", 41 },
- { "PMID", "http://www.ncbi.nlm.nih.gov/pubmed/", 35 },
- { "PMC", "http://www.ncbi.nlm.nih.gov/pmc/articles/", 41 },
- { "ISIREFNUM", "isi:", 4 },
-};
-static int nprefixes = sizeof( prefixes ) / sizeof( prefixes[0] );
-
-/* do not add, but recognize */
-static url_t extraprefixes[] = {
- /* 00000000001111111112222222222333333333344444444445 */
- /* 12345678901234567890123456789012345678901234567890 */
- { "ARXIV", "arXiv:", 6 },
- { "DOI", "http://dx.doi.org/", 18 },
- { "JSTOR", "jstor:", 6 },
- { "PMID", "pmid:", 5 },
- { "PMID", "pubmed:", 7 },
- { "PMC", "pmc:", 4 },
- { "URL", "\\urllink", 8 },
- { "URL", "\\url", 4 },
-};
-static int nextraprefixes = sizeof( extraprefixes ) / sizeof( extraprefixes[0] );
-
-static int
-find_prefix( char *s, url_t *p, int np )
-{
- int i;
-
- for ( i=0; i<np; ++i )
- if ( !strncmp( p[i].prefix, s, p[i].offset ) ) return i;
-
- return -1;
-}
-
-int
-urls_split_and_add( char *value_in, fields *out, int lvl_out )
-{
- int n, fstatus, status = BIBL_OK;
- char *tag = "URL";
- int offset = 0;
-
- n = find_prefix( value_in, prefixes, nprefixes );
- if ( n!=-1 ) {
- tag = prefixes[n].tag;
- offset = prefixes[n].offset;
- } else {
- n = find_prefix( value_in, extraprefixes, nextraprefixes );
- if ( n!=-1 ) {
- tag = extraprefixes[n].tag;
- offset = extraprefixes[n].offset;
- }
- }
-
- fstatus = fields_add( out, tag, &(value_in[offset]), lvl_out );
- if ( fstatus!=FIELDS_OK ) status = BIBL_ERR_MEMERR;
-
- return status;
-}
-
-/* urls_add_type()
- *
- * Append urls of a specific type with a specific prefix (which can be empty).
- * We don't allow duplications here.
- *
- */
-static int
-urls_merge_and_add_type( fields *out, char *tag_out, int lvl_out, char *prefix, vplist *values )
-{
- int fstatus, status = BIBL_OK;
- vplist_index i;
- str url;
-
- str_init( &url );
-
- for ( i=0; i<values->n; ++i ) {
- str_strcpyc( &url, prefix );
- str_strcatc( &url, ( char * ) vplist_get( values, i ) );
- fstatus = fields_add( out, tag_out, str_cstr( &url ), lvl_out );
- if ( fstatus!=FIELDS_OK ) {
- status = BIBL_ERR_MEMERR;
- goto out;
- }
-
- }
-out:
- str_free( &url );
- return status;
-}
-
-/*
- * urls_merge_and_add()
- *
- * Append urls of types controlled by the list type and automatically append appropriate
- * prefixes. If no prefix is found for the entry, don't add one (e.g. "URL" entries).
- *
- * Control of the types to be added by list type is necessary as some reference formats
- * like bibtex ought to do special things with DOI, ARXIV, MRNUMBER, and the like.
- */
-int
-urls_merge_and_add( fields *in, int lvl_in, fields *out, char *tag_out, int lvl_out, slist *types )
-{
- int i, j, status = BIBL_OK;
- char *tag, *prefix, *empty="";
- vplist a;
-
- vplist_init( &a );
-
- for ( i=0; i<types->n; ++i ) {
-
- tag = slist_cstr( types, i );
-
- /* ...look for data of requested type; if not found skip */
- vplist_empty( &a );
- fields_findv_each( in, lvl_in, FIELDS_CHRP, &a, tag );
- if ( a.n==0 ) continue;
-
- /* ...find the prefix (if present) */
- prefix = empty;
- for ( j=0; j<nprefixes; ++j ) {
- if ( !strcmp( prefixes[j].tag, tag ) ) {
- prefix = prefixes[j].prefix;
- break; /* take the first prefix in the list */
- }
- }
-
- /* ...append all data of this type */
- status = urls_merge_and_add_type( out, tag_out, lvl_out, prefix, &a );
- if ( status!=BIBL_OK ) goto out;
- }
-
-out:
- vplist_free( &a );
-
- return status;
-}
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