dav/tags.c

changeset 361
b6f2462ee055
child 363
e9ed8e130ccf
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dav/tags.c	Mon Jan 01 19:53:36 2018 +0100
@@ -0,0 +1,177 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2018 Olaf Wintermann. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <ucx/string.h>
+#include <ucx/utils.h>
+
+#include "libxattr.h"
+
+#include "tags.h"
+
+UcxList* parse_text_taglist(const char *buf, size_t length) {
+    UcxList *tags = NULL;
+    
+    int line_start = 0;
+    for(int i=0;i<length;i++) {
+        if(buf[i] == '\n' || i == length-1) {
+            sstr_t line = sstrtrim(sstrn((char*)buf + line_start, i - line_start));
+            if(line.length > 0) {
+                DavTag *tag = calloc(1, sizeof(DavTag));
+                tag->name = sstrdup(line).ptr;
+                tag->color = NULL;
+                tags = ucx_list_append(tags, tag);
+            }
+            line_start = i+1;
+        }
+    }
+    
+    return tags;
+}
+
+UcxBuffer* create_text_taglist(UcxList *tags) {
+    if(!tags) {
+        return NULL;
+    }
+    
+    UcxBuffer *buf = ucx_buffer_new(NULL, 128, UCX_BUFFER_AUTOEXTEND);
+    UCX_FOREACH(elm, tags) {
+        DavTag *tag = elm->data;
+        ucx_bprintf(buf, "%s\n", tag->name);
+    }
+    return buf;
+}
+
+
+UcxList* parse_csv_taglist(const char *buf, size_t length) {
+    UcxList *taglist = NULL;
+    
+    sstr_t str = sstrn((char*)buf, length);
+    ssize_t count = 0;
+    sstr_t *tags = sstrsplit(str, S(","), &count);
+    for(int i=0;i<count;i++) {
+        DavTag *tag = malloc(sizeof(DavTag));
+        tag->name = sstrdup(sstrtrim(tags[i])).ptr;
+        tag->color = NULL;
+        taglist = ucx_list_append(taglist, tag);
+        free(tags[i].ptr);
+    }
+    if(tags) {
+        free(tags);
+    }
+    return taglist;
+}
+
+UcxBuffer* create_csv_taglist(UcxList *tags) {
+    UcxBuffer *buf = ucx_buffer_new(NULL, 128, UCX_BUFFER_AUTOEXTEND);
+    int insertsep = 0;
+    UCX_FOREACH(elm, tags) {
+        DavTag *tag = elm->data;
+        if(insertsep) {
+            ucx_buffer_putc(buf, ',');
+        }
+        ucx_buffer_puts(buf, tag->name);
+        insertsep = 1;
+    }
+    return buf;
+}
+
+
+static DavTag* parse_xml_dav_tag(DavXmlNode *node) {
+    char *name = NULL;
+    
+    DavXmlNode *c = node->children;
+    while(c) {
+        if(c->type == DAV_XML_ELEMENT) {
+            char *value = dav_xml_getstring(c->children);
+            if(value) {
+                if(!strcmp(c->namespace, DAV_NS)) {
+                    if(!strcmp(c->name, "name")) {
+                        char *value = dav_xml_getstring(c->children);
+                        if(value) {
+                            name = value;
+                        }
+                    }
+                    // TODO: color, ...
+                }
+            }
+        }
+        c = c->next;
+    }
+    
+    DavTag *tag = NULL;
+    if(name) {
+        tag = malloc(sizeof(DavTag));
+        tag->name = strdup(name);
+        tag->color = NULL;
+    }
+    return tag;
+} 
+
+UcxList* parse_dav_xml_taglist(DavXmlNode *taglistnode) {
+    UcxList *tags = NULL;
+    
+    DavXmlNode *node = taglistnode;
+    while(node) {
+        if(node->type == DAV_XML_ELEMENT) {
+            if(!strcmp(node->namespace, DAV_NS) && !strcmp(node->name, "tag")) {
+                DavTag *tag = parse_xml_dav_tag(node);
+                if(tag) {
+                    tags = ucx_list_append(tags, tag);
+                }
+            }
+        } 
+        node = node->next;
+    }
+    
+    return tags;
+}
+
+DavXmlNode* create_xml_taglist(UcxList *tags) {
+    DavXmlNode *tag1 = NULL;
+    DavXmlNode *lasttag = NULL;
+    UCX_FOREACH(elm, tags) {
+        DavTag *tag = elm->data;
+        
+        DavXmlNode *tagelm = dav_xml_createnode(DAV_NS, "tag");
+        DavXmlNode *tagname = dav_xml_createnode_with_text(DAV_NS, "name", tag->name);
+        // TODO: color
+        tagelm->children = tagname;
+        
+        if(lasttag) {
+            lasttag->next = tagelm;
+            tagelm->prev = lasttag;
+        } else {
+            tag1 = tagelm;
+        }
+        lasttag = tagelm;
+    }
+    return tag1;
+}

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