Edit
kc3-lang/libxml2/shell.c
Michael Mann
- shell.c
-
/* * shell.c: The xmllint shell * * See Copyright for the status of this software. * * Author: Daniel Veillard */ #include "libxml.h" #include <stdio.h> #include <stdlib.h> #include <string.h> #ifdef _WIN32 #include <io.h> #else #include <unistd.h> #endif #ifdef HAVE_LIBREADLINE #include <readline/readline.h> #ifdef HAVE_LIBHISTORY #include <readline/history.h> #endif #endif #include <libxml/debugXML.h> #include <libxml/HTMLtree.h> #include <libxml/parser.h> #include <libxml/uri.h> #include <libxml/xpath.h> #include <libxml/xpathInternals.h> #ifdef LIBXML_RELAXNG_ENABLED #include <libxml/relaxng.h> #endif #include "private/lint.h" #ifndef STDIN_FILENO #define STDIN_FILENO 0 #endif /* * TODO: Improvement/cleanups for the XML shell * - allow to shell out an editor on a subpart * - cleanup function registrations (with help) and calling * - provide registration routines */ typedef struct _xmllintShellCtxt xmllintShellCtxt; typedef xmllintShellCtxt *xmllintShellCtxtPtr; struct _xmllintShellCtxt { char *filename; xmlDocPtr doc; xmlNodePtr node; #ifdef LIBXML_XPATH_ENABLED xmlXPathContextPtr pctxt; #endif int loaded; FILE *output; }; /** * Count the children of `node`. * * @param node the node to count * @returns the number of children of `node`. */ static int xmllintLsCountNode(xmlNodePtr node) { int ret = 0; xmlNodePtr list = NULL; if (node == NULL) return(0); switch (node->type) { case XML_ELEMENT_NODE: list = node->children; break; case XML_DOCUMENT_NODE: case XML_HTML_DOCUMENT_NODE: list = ((xmlDocPtr) node)->children; break; case XML_ATTRIBUTE_NODE: list = ((xmlAttrPtr) node)->children; break; case XML_TEXT_NODE: case XML_CDATA_SECTION_NODE: case XML_PI_NODE: case XML_COMMENT_NODE: if (node->content != NULL) { ret = xmlStrlen(node->content); } break; case XML_ENTITY_REF_NODE: case XML_DOCUMENT_TYPE_NODE: case XML_ENTITY_NODE: case XML_DOCUMENT_FRAG_NODE: case XML_NOTATION_NODE: case XML_DTD_NODE: case XML_ELEMENT_DECL: case XML_ATTRIBUTE_DECL: case XML_ENTITY_DECL: case XML_NAMESPACE_DECL: case XML_XINCLUDE_START: case XML_XINCLUDE_END: ret = 1; break; } for (;list != NULL;ret++) list = list->next; return(ret); } /** * Dump to `output` the type and name of `node`. * * @param output the FILE * for the output * @param node the node to dump */ static void xmllintLsOneNode(FILE *output, xmlNodePtr node) { if (output == NULL) return; if (node == NULL) { fprintf(output, "NULL\n"); return; } switch (node->type) { case XML_ELEMENT_NODE: fprintf(output, "-"); break; case XML_ATTRIBUTE_NODE: fprintf(output, "a"); break; case XML_TEXT_NODE: fprintf(output, "t"); break; case XML_CDATA_SECTION_NODE: fprintf(output, "C"); break; case XML_ENTITY_REF_NODE: fprintf(output, "e"); break; case XML_ENTITY_NODE: fprintf(output, "E"); break; case XML_PI_NODE: fprintf(output, "p"); break; case XML_COMMENT_NODE: fprintf(output, "c"); break; case XML_DOCUMENT_NODE: fprintf(output, "d"); break; case XML_HTML_DOCUMENT_NODE: fprintf(output, "h"); break; case XML_DOCUMENT_TYPE_NODE: fprintf(output, "T"); break; case XML_DOCUMENT_FRAG_NODE: fprintf(output, "F"); break; case XML_NOTATION_NODE: fprintf(output, "N"); break; case XML_NAMESPACE_DECL: fprintf(output, "n"); break; default: fprintf(output, "?"); } if (node->type != XML_NAMESPACE_DECL) { if (node->properties != NULL) fprintf(output, "a"); else fprintf(output, "-"); if (node->nsDef != NULL) fprintf(output, "n"); else fprintf(output, "-"); } fprintf(output, " %8d ", xmllintLsCountNode(node)); switch (node->type) { case XML_ELEMENT_NODE: if (node->name != NULL) { if ((node->ns != NULL) && (node->ns->prefix != NULL)) fprintf(output, "%s:", node->ns->prefix); fprintf(output, "%s", (const char *) node->name); } break; case XML_ATTRIBUTE_NODE: if (node->name != NULL) fprintf(output, "%s", (const char *) node->name); break; case XML_TEXT_NODE: #ifdef LIBXML_DEBUG_ENABLED if (node->content != NULL) { xmlDebugDumpString(output, node->content); } #endif break; case XML_CDATA_SECTION_NODE: break; case XML_ENTITY_REF_NODE: if (node->name != NULL) fprintf(output, "%s", (const char *) node->name); break; case XML_ENTITY_NODE: if (node->name != NULL) fprintf(output, "%s", (const char *) node->name); break; case XML_PI_NODE: if (node->name != NULL) fprintf(output, "%s", (const char *) node->name); break; case XML_COMMENT_NODE: break; case XML_DOCUMENT_NODE: break; case XML_HTML_DOCUMENT_NODE: break; case XML_DOCUMENT_TYPE_NODE: break; case XML_DOCUMENT_FRAG_NODE: break; case XML_NOTATION_NODE: break; case XML_NAMESPACE_DECL: { xmlNsPtr ns = (xmlNsPtr) node; if (ns->prefix == NULL) fprintf(output, "default -> %s", (char *)ns->href); else fprintf(output, "%s -> %s", (char *)ns->prefix, (char *)ns->href); break; } default: if (node->name != NULL) fprintf(output, "%s", (const char *) node->name); } fprintf(output, "\n"); } /** * Implements the XML shell function "ls" * Does an Unix like listing of the given node (like a directory) * * @param ctxt the shell context * @param arg unused * @param node a node * @param node2 unused * @returns 0 */ static int xmllintShellList(xmllintShellCtxtPtr ctxt, char *arg ATTRIBUTE_UNUSED, xmlNodePtr node, xmlNodePtr node2 ATTRIBUTE_UNUSED) { xmlNodePtr cur; if (!ctxt) return (0); if (node == NULL) { fprintf(ctxt->output, "NULL\n"); return (0); } if ((node->type == XML_DOCUMENT_NODE) || (node->type == XML_HTML_DOCUMENT_NODE)) { cur = ((xmlDocPtr) node)->children; } else if (node->type == XML_NAMESPACE_DECL) { xmllintLsOneNode(ctxt->output, node); return (0); } else if (node->children != NULL) { cur = node->children; } else { xmllintLsOneNode(ctxt->output, node); return (0); } while (cur != NULL) { xmllintLsOneNode(ctxt->output, cur); cur = cur->next; } return (0); } /** * Implements the XML shell function "base" * dumps the current XML base of the node * * @param ctxt the shell context * @param arg unused * @param node a node * @param node2 unused * @returns 0 */ static int xmllintShellBase(xmllintShellCtxtPtr ctxt, char *arg ATTRIBUTE_UNUSED, xmlNodePtr node, xmlNodePtr node2 ATTRIBUTE_UNUSED) { xmlChar *base; if (!ctxt) return 0; if (node == NULL) { fprintf(ctxt->output, "NULL\n"); return (0); } base = xmlNodeGetBase(node->doc, node); if (base == NULL) { fprintf(ctxt->output, " No base found !!!\n"); } else { fprintf(ctxt->output, "%s\n", base); xmlFree(base); } return (0); } /** * Implements the XML shell function "setbase" * change the current XML base of the node * * @param ctxt the shell context * @param arg the new base * @param node a node * @param node2 unused * @returns 0 */ static int xmllintShellSetBase(xmllintShellCtxtPtr ctxt ATTRIBUTE_UNUSED, char *arg ATTRIBUTE_UNUSED, xmlNodePtr node, xmlNodePtr node2 ATTRIBUTE_UNUSED) { xmlNodeSetBase(node, (xmlChar*) arg); return (0); } #ifdef LIBXML_XPATH_ENABLED /** * Implements the XML shell function "setns" * register/unregister a prefix=namespace pair * on the XPath context * * @param ctxt the shell context * @param arg a string in prefix=nsuri format * @param node unused * @param node2 unused * @returns 0 on success and a negative value otherwise. */ static int xmllintShellRegisterNamespace(xmllintShellCtxtPtr ctxt, char *arg, xmlNodePtr node ATTRIBUTE_UNUSED, xmlNodePtr node2 ATTRIBUTE_UNUSED) { xmlChar* nsListDup; xmlChar* prefix; xmlChar* href; xmlChar* next; nsListDup = xmlStrdup((xmlChar *) arg); next = nsListDup; while(next != NULL) { /* skip spaces */ /*while((*next) == ' ') next++;*/ if((*next) == '\0') break; /* find prefix */ prefix = next; next = (xmlChar*)xmlStrchr(next, '='); if(next == NULL) { fprintf(ctxt->output, "setns: prefix=[nsuri] required\n"); xmlFree(nsListDup); return(-1); } *(next++) = '\0'; /* find href */ href = next; next = (xmlChar*)xmlStrchr(next, ' '); if(next != NULL) { *(next++) = '\0'; } /* do register namespace */ if(xmlXPathRegisterNs(ctxt->pctxt, prefix, href) != 0) { fprintf(ctxt->output,"Error: unable to register NS with prefix=\"%s\" and href=\"%s\"\n", prefix, href); xmlFree(nsListDup); return(-1); } } xmlFree(nsListDup); return(0); } /** * Implements the XML shell function "setrootns" * which registers all namespaces declarations found on the root element. * * @param ctxt the shell context * @param arg unused * @param root the root element * @param node2 unused * @returns 0 on success and a negative value otherwise. */ static int xmllintShellRegisterRootNamespaces(xmllintShellCtxtPtr ctxt, char *arg ATTRIBUTE_UNUSED, xmlNodePtr root, xmlNodePtr node2 ATTRIBUTE_UNUSED) { xmlNsPtr ns; if ((root == NULL) || (root->type != XML_ELEMENT_NODE) || (root->nsDef == NULL) || (ctxt == NULL) || (ctxt->pctxt == NULL)) return(-1); ns = root->nsDef; while (ns != NULL) { if (ns->prefix == NULL) xmlXPathRegisterNs(ctxt->pctxt, BAD_CAST "defaultns", ns->href); else xmlXPathRegisterNs(ctxt->pctxt, ns->prefix, ns->href); ns = ns->next; } return(0); } #endif /** * Implements the XML shell function "grep" * dumps information about the node (namespace, attributes, content). * * @param ctxt the shell context * @param arg the string or regular expression to find * @param node a node * @param node2 unused * @returns 0 */ static int xmllintShellGrep(xmllintShellCtxtPtr ctxt ATTRIBUTE_UNUSED, char *arg, xmlNodePtr node, xmlNodePtr node2 ATTRIBUTE_UNUSED) { if (!ctxt) return (0); if (node == NULL) return (0); if (arg == NULL) return (0); #ifdef LIBXML_REGEXP_ENABLED if ((xmlStrchr((xmlChar *) arg, '?')) || (xmlStrchr((xmlChar *) arg, '*')) || (xmlStrchr((xmlChar *) arg, '.')) || (xmlStrchr((xmlChar *) arg, '['))) { } #endif while (node != NULL) { if (node->type == XML_COMMENT_NODE) { if (xmlStrstr(node->content, (xmlChar *) arg)) { fprintf(ctxt->output, "%s : ", xmlGetNodePath(node)); xmllintShellList(ctxt, NULL, node, NULL); } } else if (node->type == XML_TEXT_NODE) { if (xmlStrstr(node->content, (xmlChar *) arg)) { fprintf(ctxt->output, "%s : ", xmlGetNodePath(node->parent)); xmllintShellList(ctxt, NULL, node->parent, NULL); } } /* * Browse the full subtree, deep first */ if ((node->type == XML_DOCUMENT_NODE) || (node->type == XML_HTML_DOCUMENT_NODE)) { node = ((xmlDocPtr) node)->children; } else if ((node->children != NULL) && (node->type != XML_ENTITY_REF_NODE)) { /* deep first */ node = node->children; } else if (node->next != NULL) { /* then siblings */ node = node->next; } else { /* go up to parents->next if needed */ while (node != NULL) { if (node->parent != NULL) { node = node->parent; } if (node->next != NULL) { node = node->next; break; } if (node->parent == NULL) { node = NULL; break; } } } } return (0); } /** * Implements the XML shell function "dir" * dumps information about the node (namespace, attributes, content). * * @param ctxt the shell context * @param arg unused * @param node a node * @param node2 unused * @returns 0 */ static int xmllintShellDir(xmllintShellCtxtPtr ctxt ATTRIBUTE_UNUSED, char *arg ATTRIBUTE_UNUSED, xmlNodePtr node, xmlNodePtr node2 ATTRIBUTE_UNUSED) { if (!ctxt) return (0); if (node == NULL) { fprintf(ctxt->output, "NULL\n"); return (0); } #ifdef LIBXML_DEBUG_ENABLED if ((node->type == XML_DOCUMENT_NODE) || (node->type == XML_HTML_DOCUMENT_NODE)) { xmlDebugDumpDocumentHead(ctxt->output, (xmlDocPtr) node); } else if (node->type == XML_ATTRIBUTE_NODE) { xmlDebugDumpAttr(ctxt->output, (xmlAttrPtr) node, 0); } else { xmlDebugDumpOneNode(ctxt->output, node, 0); } #endif return (0); } /** * Implements the XML shell function "dir" * dumps information about the node (namespace, attributes, content). * * @param ctxt the shell context * @param value the content as a string * @param node a node * @param node2 unused * @returns 0 */ static int xmllintShellSetContent(xmllintShellCtxtPtr ctxt ATTRIBUTE_UNUSED, char *value, xmlNodePtr node, xmlNodePtr node2 ATTRIBUTE_UNUSED) { xmlNodePtr results; xmlParserErrors ret; if (!ctxt) return (0); if (node == NULL) { fprintf(ctxt->output, "NULL\n"); return (0); } if (value == NULL) { fprintf(ctxt->output, "NULL\n"); return (0); } ret = xmlParseInNodeContext(node, value, strlen(value), 0, &results); if (ret == XML_ERR_OK) { if (node->children != NULL) { xmlFreeNodeList(node->children); node->children = NULL; node->last = NULL; } xmlAddChildList(node, results); } else { fprintf(ctxt->output, "failed to parse content\n"); } return (0); } #if defined(LIBXML_VALID_ENABLED) || defined(LIBXML_RELAXNG_ENABLED) static void xmllintShellPrintf(void *ctx, const char *msg, ...) { xmllintShellCtxtPtr sctxt = ctx; va_list ap; va_start(ap, msg); vfprintf(sctxt->output, msg, ap); va_end(ap); } #endif /* defined(LIBXML_VALID_ENABLED) || defined(LIBXML_RELAXNG_ENABLED) */ #ifdef LIBXML_RELAXNG_ENABLED /** * Implements the XML shell function "relaxng" * validating the instance against a Relax-NG schemas * * @param sctxt the shell context * @param schemas the path to the Relax-NG schemas * @param node a node * @param node2 unused * @returns 0 */ static int xmllintShellRNGValidate(xmllintShellCtxtPtr sctxt, char *schemas, xmlNodePtr node ATTRIBUTE_UNUSED, xmlNodePtr node2 ATTRIBUTE_UNUSED) { xmlRelaxNGPtr relaxngschemas; xmlRelaxNGParserCtxtPtr ctxt; xmlRelaxNGValidCtxtPtr vctxt; int ret; ctxt = xmlRelaxNGNewParserCtxt(schemas); xmlRelaxNGSetParserErrors(ctxt, xmllintShellPrintf, xmllintShellPrintf, sctxt); relaxngschemas = xmlRelaxNGParse(ctxt); xmlRelaxNGFreeParserCtxt(ctxt); if (relaxngschemas == NULL) { fprintf(sctxt->output, "Relax-NG schema %s failed to compile\n", schemas); return(-1); } vctxt = xmlRelaxNGNewValidCtxt(relaxngschemas); xmlRelaxNGSetValidErrors(vctxt, xmllintShellPrintf, xmllintShellPrintf, sctxt); ret = xmlRelaxNGValidateDoc(vctxt, sctxt->doc); if (ret == 0) { fprintf(sctxt->output, "%s validates\n", sctxt->filename); } else if (ret > 0) { fprintf(sctxt->output, "%s fails to validate\n", sctxt->filename); } else { fprintf(sctxt->output, "%s validation generated an internal error\n", sctxt->filename); } xmlRelaxNGFreeValidCtxt(vctxt); if (relaxngschemas != NULL) xmlRelaxNGFree(relaxngschemas); return(0); } #endif #ifdef LIBXML_OUTPUT_ENABLED /** * Implements the XML shell function "cat" * dumps the serialization node content (XML or HTML). * * @param ctxt the shell context * @param arg unused * @param node a node * @param node2 unused * @returns 0 */ static int xmllintShellCat(xmllintShellCtxtPtr ctxt, char *arg ATTRIBUTE_UNUSED, xmlNodePtr node, xmlNodePtr node2 ATTRIBUTE_UNUSED) { if (!ctxt) return (0); if (node == NULL) { fprintf(ctxt->output, "NULL\n"); return (0); } if (ctxt->doc->type == XML_HTML_DOCUMENT_NODE) { #ifdef LIBXML_HTML_ENABLED if (node->type == XML_HTML_DOCUMENT_NODE) htmlDocDump(ctxt->output, (htmlDocPtr) node); else htmlNodeDumpFile(ctxt->output, ctxt->doc, node); #else if (node->type == XML_DOCUMENT_NODE) xmlDocDump(ctxt->output, (xmlDocPtr) node); else xmlElemDump(ctxt->output, ctxt->doc, node); #endif /* LIBXML_HTML_ENABLED */ } else { if (node->type == XML_DOCUMENT_NODE) xmlDocDump(ctxt->output, (xmlDocPtr) node); else xmlElemDump(ctxt->output, ctxt->doc, node); } fprintf(ctxt->output, "\n"); return (0); } #endif /* LIBXML_OUTPUT_ENABLED */ /** * Implements the XML shell function "load" * loads a new document specified by the filename * * @param ctxt the shell context * @param filename the file name * @param node unused * @param node2 unused * @returns 0 or -1 if loading failed */ static int xmllintShellLoad(xmllintShellCtxtPtr ctxt, char *filename, xmlNodePtr node ATTRIBUTE_UNUSED, xmlNodePtr node2 ATTRIBUTE_UNUSED) { xmlDocPtr doc; int html = 0; if ((ctxt == NULL) || (filename == NULL)) return(-1); if (ctxt->doc != NULL) html = (ctxt->doc->type == XML_HTML_DOCUMENT_NODE); if (html) { #ifdef LIBXML_HTML_ENABLED doc = htmlParseFile(filename, NULL); #else fprintf(ctxt->output, "HTML support not compiled in\n"); doc = NULL; #endif /* LIBXML_HTML_ENABLED */ } else { doc = xmlReadFile(filename,NULL,0); } if (doc != NULL) { if (ctxt->loaded == 1) { xmlFreeDoc(ctxt->doc); } ctxt->loaded = 1; #ifdef LIBXML_XPATH_ENABLED xmlXPathFreeContext(ctxt->pctxt); #endif /* LIBXML_XPATH_ENABLED */ xmlFree(ctxt->filename); ctxt->doc = doc; ctxt->node = (xmlNodePtr) doc; #ifdef LIBXML_XPATH_ENABLED ctxt->pctxt = xmlXPathNewContext(doc); #endif /* LIBXML_XPATH_ENABLED */ ctxt->filename = (char *) xmlCanonicPath((xmlChar *) filename); } else return (-1); return (0); } #ifdef LIBXML_OUTPUT_ENABLED /** * Implements the XML shell function "write" * Write the current node to the filename, it saves the serialization * of the subtree under the `node` specified * * @param ctxt the shell context * @param filename the file name * @param node a node in the tree * @param node2 unused * @returns 0 or -1 in case of error */ static int xmllintShellWrite(xmllintShellCtxtPtr ctxt, char *filename, xmlNodePtr node, xmlNodePtr node2 ATTRIBUTE_UNUSED) { if (node == NULL) return (-1); if ((filename == NULL) || (filename[0] == 0)) { return (-1); } switch (node->type) { case XML_DOCUMENT_NODE: if (xmlSaveFile((char *) filename, ctxt->doc) < -1) { fprintf(ctxt->output, "Failed to write to %s\n", filename); return (-1); } break; case XML_HTML_DOCUMENT_NODE: #ifdef LIBXML_HTML_ENABLED if (htmlSaveFile((char *) filename, ctxt->doc) < 0) { fprintf(ctxt->output, "Failed to write to %s\n", filename); return (-1); } #else if (xmlSaveFile((char *) filename, ctxt->doc) < -1) { fprintf(ctxt->output, "Failed to write to %s\n", filename); return (-1); } #endif /* LIBXML_HTML_ENABLED */ break; default:{ FILE *f; f = fopen((char *) filename, "wb"); if (f == NULL) { fprintf(ctxt->output, "Failed to write to %s\n", filename); return (-1); } xmlElemDump(f, ctxt->doc, node); fclose(f); } } return (0); } /** * Implements the XML shell function "save" * Write the current document to the filename, or it's original name * * @param ctxt the shell context * @param filename the file name (optional) * @param node unused * @param node2 unused * @returns 0 or -1 in case of error */ static int xmllintShellSave(xmllintShellCtxtPtr ctxt, char *filename, xmlNodePtr node ATTRIBUTE_UNUSED, xmlNodePtr node2 ATTRIBUTE_UNUSED) { if ((ctxt == NULL) || (ctxt->doc == NULL)) return (-1); if ((filename == NULL) || (filename[0] == 0)) filename = ctxt->filename; if (filename == NULL) return (-1); switch (ctxt->doc->type) { case XML_DOCUMENT_NODE: if (xmlSaveFile((char *) filename, ctxt->doc) < 0) { fprintf(ctxt->output, "Failed to save to %s\n", filename); } break; case XML_HTML_DOCUMENT_NODE: #ifdef LIBXML_HTML_ENABLED if (htmlSaveFile((char *) filename, ctxt->doc) < 0) { fprintf(ctxt->output, "Failed to save to %s\n", filename); } #else if (xmlSaveFile((char *) filename, ctxt->doc) < 0) { fprintf(ctxt->output, "Failed to save to %s\n", filename); } #endif /* LIBXML_HTML_ENABLED */ break; default: fprintf(ctxt->output, "To save to subparts of a document use the 'write' command\n"); return (-1); } return (0); } #endif /* LIBXML_OUTPUT_ENABLED */ #ifdef LIBXML_VALID_ENABLED /** * Implements the XML shell function "validate" * Validate the document, if a DTD path is provided, then the validation * is done against the given DTD. * * @param ctxt the shell context * @param dtd the DTD URI (optional) * @param node unused * @param node2 unused * @returns 0 or -1 in case of error */ static int xmllintShellValidate(xmllintShellCtxtPtr ctxt, char *dtd, xmlNodePtr node ATTRIBUTE_UNUSED, xmlNodePtr node2 ATTRIBUTE_UNUSED) { xmlValidCtxt vctxt; int res = -1; if ((ctxt == NULL) || (ctxt->doc == NULL)) return(-1); memset(&vctxt, 0, sizeof(vctxt)); vctxt.error = xmllintShellPrintf; vctxt.warning = xmllintShellPrintf; vctxt.userData = ctxt; if ((dtd == NULL) || (dtd[0] == 0)) { res = xmlValidateDocument(&vctxt, ctxt->doc); } else { xmlDtdPtr subset; subset = xmlParseDTD(NULL, (xmlChar *) dtd); if (subset != NULL) { res = xmlValidateDtd(&vctxt, ctxt->doc, subset); xmlFreeDtd(subset); } } return (res); } #endif /* LIBXML_VALID_ENABLED */ /** * Implements the XML shell function "du" * show the structure of the subtree under node `tree` * If `tree` is null, the command works on the current node. * * @param ctxt the shell context * @param arg unused * @param tree a node defining a subtree * @param node2 unused * @returns 0 or -1 in case of error */ static int xmllintShellDu(xmllintShellCtxtPtr ctxt, char *arg ATTRIBUTE_UNUSED, xmlNodePtr tree, xmlNodePtr node2 ATTRIBUTE_UNUSED) { xmlNodePtr node; int indent = 0, i; if (!ctxt) return (-1); if (tree == NULL) return (-1); node = tree; while (node != NULL) { if ((node->type == XML_DOCUMENT_NODE) || (node->type == XML_HTML_DOCUMENT_NODE)) { fprintf(ctxt->output, "/\n"); } else if (node->type == XML_ELEMENT_NODE) { for (i = 0; i < indent; i++) fprintf(ctxt->output, " "); if ((node->ns) && (node->ns->prefix)) fprintf(ctxt->output, "%s:", node->ns->prefix); fprintf(ctxt->output, "%s\n", node->name); } else { } /* * Browse the full subtree, deep first */ if ((node->type == XML_DOCUMENT_NODE) || (node->type == XML_HTML_DOCUMENT_NODE)) { node = ((xmlDocPtr) node)->children; } else if ((node->children != NULL) && (node->type != XML_ENTITY_REF_NODE)) { /* deep first */ node = node->children; indent++; } else if ((node != tree) && (node->next != NULL)) { /* then siblings */ node = node->next; } else if (node != tree) { /* go up to parents->next if needed */ while (node != tree) { if (node->parent != NULL) { node = node->parent; indent--; } if ((node != tree) && (node->next != NULL)) { node = node->next; break; } if (node->parent == NULL) { node = NULL; break; } if (node == tree) { node = NULL; break; } } /* exit condition */ if (node == tree) node = NULL; } else node = NULL; } return (0); } /** * Implements the XML shell function "pwd" * Show the full path from the root to the node, if needed building * thumblers when similar elements exists at a given ancestor level. * The output is compatible with XPath commands. * * @param ctxt the shell context * @param buffer the output buffer * @param node a node * @param node2 unused * @returns 0 or -1 in case of error */ static int xmllintShellPwd(xmllintShellCtxtPtr ctxt ATTRIBUTE_UNUSED, char *buffer, xmlNodePtr node, xmlNodePtr node2 ATTRIBUTE_UNUSED) { xmlChar *path; if ((node == NULL) || (buffer == NULL)) return (-1); path = xmlGetNodePath(node); if (path == NULL) return (-1); /* * This test prevents buffer overflow, because this routine * is only called by xmllintShell, in which the second argument is * 500 chars long. * It is a dirty hack before a cleaner solution is found. * Documentation should mention that the second argument must * be at least 500 chars long, and could be stripped if too long. */ snprintf(buffer, 499, "%s", path); buffer[499] = '0'; xmlFree(path); return (0); } #define MAX_PROMPT_SIZE 500 #define MAX_ARG_SIZE 400 #define MAX_COMMAND_SIZE 100 /** * Read a string * * @param prompt the prompt value * @returns a pointer to it or NULL on EOF the caller is expected to * free the returned string. */ static char * xmllintShellReadline(char *prompt) { char buf[MAX_PROMPT_SIZE+1]; char *ret; int len; #ifdef HAVE_LIBREADLINE if (isatty(STDIN_FILENO)) { char *line_read; /* Get a line from the user. */ line_read = readline (prompt); #ifdef HAVE_LIBHISTORY /* If the line has any text in it, save it on the history. */ if (line_read && *line_read) add_history (line_read); #endif return (line_read); } #endif if (prompt != NULL) fprintf(stdout, "%s", prompt); fflush(stdout); if (!fgets(buf, MAX_PROMPT_SIZE, stdin)) return(NULL); buf[MAX_PROMPT_SIZE] = 0; len = strlen(buf); ret = (char *) malloc(len + 1); if (ret != NULL) { memcpy (ret, buf, len + 1); } return(ret); } /** * Implements the XML shell * This allow to load, validate, view, modify and save a document * using a environment similar to a UNIX commandline. * * @param doc the initial document * @param filename the output buffer * @param output the output FILE*, defaults to stdout if NULL */ void xmllintShell(xmlDoc *doc, const char *filename, FILE * output) { char prompt[MAX_PROMPT_SIZE] = "/ > "; char *cmdline = NULL, *cur; char command[MAX_COMMAND_SIZE]; char arg[MAX_ARG_SIZE]; int i; xmllintShellCtxtPtr ctxt; #ifdef LIBXML_XPATH_ENABLED xmlXPathObjectPtr list; #endif if (doc == NULL) return; if (filename == NULL) return; if (output == NULL) output = stdout; ctxt = (xmllintShellCtxtPtr) xmlMalloc(sizeof(xmllintShellCtxt)); if (ctxt == NULL) return; ctxt->loaded = 0; ctxt->doc = doc; ctxt->output = output; ctxt->filename = (char *) xmlStrdup((xmlChar *) filename); ctxt->node = (xmlNodePtr) ctxt->doc; #ifdef LIBXML_XPATH_ENABLED ctxt->pctxt = xmlXPathNewContext(ctxt->doc); if (ctxt->pctxt == NULL) { xmlFree(ctxt); return; } #endif /* LIBXML_XPATH_ENABLED */ while (1) { if (ctxt->node == (xmlNodePtr) ctxt->doc) snprintf(prompt, sizeof(prompt), "%s > ", "/"); else if ((ctxt->node != NULL) && (ctxt->node->name) && (ctxt->node->ns) && (ctxt->node->ns->prefix)) snprintf(prompt, sizeof(prompt), "%s:%s > ", (ctxt->node->ns->prefix), ctxt->node->name); else if ((ctxt->node != NULL) && (ctxt->node->name)) snprintf(prompt, sizeof(prompt), "%s > ", ctxt->node->name); else snprintf(prompt, sizeof(prompt), "? > "); prompt[sizeof(prompt) - 1] = 0; /* * Get a new command line */ cmdline = xmllintShellReadline(prompt); if (cmdline == NULL) break; /* * Parse the command itself */ cur = cmdline; while ((*cur == ' ') || (*cur == '\t')) cur++; i = 0; while ((*cur != ' ') && (*cur != '\t') && (*cur != '\n') && (*cur != '\r') && (i < (MAX_COMMAND_SIZE - 1))) { if (*cur == 0) break; command[i++] = *cur++; } command[i] = 0; if (i == 0) continue; /* * Parse the argument */ while ((*cur == ' ') || (*cur == '\t')) cur++; i = 0; while ((*cur != '\n') && (*cur != '\r') && (*cur != 0) && (i < (MAX_ARG_SIZE-1))) { if (*cur == 0) break; arg[i++] = *cur++; } arg[i] = 0; /* * start interpreting the command */ if (!strcmp(command, "exit")) break; if (!strcmp(command, "quit")) break; if (!strcmp(command, "bye")) break; if (!strcmp(command, "help")) { fprintf(ctxt->output, "\tbase display XML base of the node\n"); fprintf(ctxt->output, "\tsetbase URI change the XML base of the node\n"); fprintf(ctxt->output, "\tbye leave shell\n"); fprintf(ctxt->output, "\tcat [node] display node or current node\n"); fprintf(ctxt->output, "\tcd [path] change directory to path or to root\n"); fprintf(ctxt->output, "\tdir [path] dumps information about the node (namespace, attributes, content)\n"); fprintf(ctxt->output, "\tdu [path] show the structure of the subtree under path or the current node\n"); fprintf(ctxt->output, "\texit leave shell\n"); fprintf(ctxt->output, "\thelp display this help\n"); fprintf(ctxt->output, "\tfree display memory usage\n"); fprintf(ctxt->output, "\tload [name] load a new document with name\n"); fprintf(ctxt->output, "\tls [path] list contents of path or the current directory\n"); fprintf(ctxt->output, "\tset xml_fragment replace the current node content with the fragment parsed in context\n"); #ifdef LIBXML_XPATH_ENABLED fprintf(ctxt->output, "\txpath expr evaluate the XPath expression in that context and print the result\n"); fprintf(ctxt->output, "\tsetns nsreg register a namespace to a prefix in the XPath evaluation context\n"); fprintf(ctxt->output, "\t format for nsreg is: prefix=[nsuri] (i.e. prefix= unsets a prefix)\n"); fprintf(ctxt->output, "\tsetrootns register all namespace found on the root element\n"); fprintf(ctxt->output, "\t the default namespace if any uses 'defaultns' prefix\n"); #endif /* LIBXML_XPATH_ENABLED */ fprintf(ctxt->output, "\tpwd display current working directory\n"); fprintf(ctxt->output, "\twhereis display absolute path of [path] or current working directory\n"); fprintf(ctxt->output, "\tquit leave shell\n"); #ifdef LIBXML_OUTPUT_ENABLED fprintf(ctxt->output, "\tsave [name] save this document to name or the original name\n"); fprintf(ctxt->output, "\twrite [name] write the current node to the filename\n"); #endif /* LIBXML_OUTPUT_ENABLED */ #ifdef LIBXML_VALID_ENABLED fprintf(ctxt->output, "\tvalidate check the document for errors\n"); #endif /* LIBXML_VALID_ENABLED */ #ifdef LIBXML_RELAXNG_ENABLED fprintf(ctxt->output, "\trelaxng rng validate the document against the Relax-NG schemas\n"); #endif fprintf(ctxt->output, "\tgrep string search for a string in the subtree\n"); #ifdef LIBXML_VALID_ENABLED } else if (!strcmp(command, "validate")) { xmllintShellValidate(ctxt, arg, NULL, NULL); #endif /* LIBXML_VALID_ENABLED */ } else if (!strcmp(command, "load")) { xmllintShellLoad(ctxt, arg, NULL, NULL); #ifdef LIBXML_RELAXNG_ENABLED } else if (!strcmp(command, "relaxng")) { xmllintShellRNGValidate(ctxt, arg, NULL, NULL); #endif #ifdef LIBXML_OUTPUT_ENABLED } else if (!strcmp(command, "save")) { xmllintShellSave(ctxt, arg, NULL, NULL); } else if (!strcmp(command, "write")) { if (arg[0] == 0) fprintf(ctxt->output, "Write command requires a filename argument\n"); else xmllintShellWrite(ctxt, arg, ctxt->node, NULL); #endif /* LIBXML_OUTPUT_ENABLED */ } else if (!strcmp(command, "grep")) { xmllintShellGrep(ctxt, arg, ctxt->node, NULL); } else if (!strcmp(command, "pwd")) { char dir[500]; if (!xmllintShellPwd(ctxt, dir, ctxt->node, NULL)) fprintf(ctxt->output, "%s\n", dir); } else if (!strcmp(command, "du")) { if (arg[0] == 0) { xmllintShellDu(ctxt, NULL, ctxt->node, NULL); } else { #ifdef LIBXML_XPATH_ENABLED ctxt->pctxt->node = ctxt->node; list = xmlXPathEval((xmlChar *) arg, ctxt->pctxt); if (list != NULL) { switch (list->type) { case XPATH_UNDEFINED: fprintf(ctxt->output, "%s: no such node\n", arg); break; case XPATH_NODESET:{ int indx; if (list->nodesetval == NULL) break; for (indx = 0; indx < list->nodesetval->nodeNr; indx++) xmllintShellDu(ctxt, NULL, list->nodesetval-> nodeTab[indx], NULL); break; } case XPATH_BOOLEAN: fprintf(ctxt->output, "%s is a Boolean\n", arg); break; case XPATH_NUMBER: fprintf(ctxt->output, "%s is a number\n", arg); break; case XPATH_STRING: fprintf(ctxt->output, "%s is a string\n", arg); break; case XPATH_USERS: fprintf(ctxt->output, "%s is user-defined\n", arg); break; case XPATH_XSLT_TREE: fprintf(ctxt->output, "%s is an XSLT value tree\n", arg); break; } xmlXPathFreeObject(list); } else { fprintf(ctxt->output, "%s: no such node\n", arg); } ctxt->pctxt->node = NULL; #endif /* LIBXML_XPATH_ENABLED */ } } else if (!strcmp(command, "base")) { xmllintShellBase(ctxt, NULL, ctxt->node, NULL); } else if (!strcmp(command, "set")) { xmllintShellSetContent(ctxt, arg, ctxt->node, NULL); #ifdef LIBXML_XPATH_ENABLED } else if (!strcmp(command, "setns")) { if (arg[0] == 0) { fprintf(ctxt->output, "setns: prefix=[nsuri] required\n"); } else { xmllintShellRegisterNamespace(ctxt, arg, NULL, NULL); } } else if (!strcmp(command, "setrootns")) { xmlNodePtr root; root = xmlDocGetRootElement(ctxt->doc); xmllintShellRegisterRootNamespaces(ctxt, NULL, root, NULL); #ifdef LIBXML_DEBUG_ENABLED } else if (!strcmp(command, "xpath")) { if (arg[0] == 0) { fprintf(ctxt->output, "xpath: expression required\n"); } else { ctxt->pctxt->node = ctxt->node; list = xmlXPathEval((xmlChar *) arg, ctxt->pctxt); xmlXPathDebugDumpObject(ctxt->output, list, 0); xmlXPathFreeObject(list); } #endif /* LIBXML_DEBUG_ENABLED */ #endif /* LIBXML_XPATH_ENABLED */ } else if (!strcmp(command, "setbase")) { xmllintShellSetBase(ctxt, arg, ctxt->node, NULL); } else if ((!strcmp(command, "ls")) || (!strcmp(command, "dir"))) { int dir = (!strcmp(command, "dir")); if (arg[0] == 0) { if (dir) xmllintShellDir(ctxt, NULL, ctxt->node, NULL); else xmllintShellList(ctxt, NULL, ctxt->node, NULL); } else { #ifdef LIBXML_XPATH_ENABLED ctxt->pctxt->node = ctxt->node; list = xmlXPathEval((xmlChar *) arg, ctxt->pctxt); if (list != NULL) { switch (list->type) { case XPATH_UNDEFINED: fprintf(ctxt->output, "%s: no such node\n", arg); break; case XPATH_NODESET:{ int indx; if (list->nodesetval == NULL) break; for (indx = 0; indx < list->nodesetval->nodeNr; indx++) { if (dir) xmllintShellDir(ctxt, NULL, list->nodesetval-> nodeTab[indx], NULL); else xmllintShellList(ctxt, NULL, list->nodesetval-> nodeTab[indx], NULL); } break; } case XPATH_BOOLEAN: fprintf(ctxt->output, "%s is a Boolean\n", arg); break; case XPATH_NUMBER: fprintf(ctxt->output, "%s is a number\n", arg); break; case XPATH_STRING: fprintf(ctxt->output, "%s is a string\n", arg); break; case XPATH_USERS: fprintf(ctxt->output, "%s is user-defined\n", arg); break; case XPATH_XSLT_TREE: fprintf(ctxt->output, "%s is an XSLT value tree\n", arg); break; } xmlXPathFreeObject(list); } else { fprintf(ctxt->output, "%s: no such node\n", arg); } ctxt->pctxt->node = NULL; #endif /* LIBXML_XPATH_ENABLED */ } } else if (!strcmp(command, "whereis")) { char dir[500]; if (arg[0] == 0) { if (!xmllintShellPwd(ctxt, dir, ctxt->node, NULL)) fprintf(ctxt->output, "%s\n", dir); } else { #ifdef LIBXML_XPATH_ENABLED ctxt->pctxt->node = ctxt->node; list = xmlXPathEval((xmlChar *) arg, ctxt->pctxt); if (list != NULL) { switch (list->type) { case XPATH_UNDEFINED: fprintf(ctxt->output, "%s: no such node\n", arg); break; case XPATH_NODESET:{ int indx; if (list->nodesetval == NULL) break; for (indx = 0; indx < list->nodesetval->nodeNr; indx++) { if (!xmllintShellPwd(ctxt, dir, list->nodesetval-> nodeTab[indx], NULL)) fprintf(ctxt->output, "%s\n", dir); } break; } case XPATH_BOOLEAN: fprintf(ctxt->output, "%s is a Boolean\n", arg); break; case XPATH_NUMBER: fprintf(ctxt->output, "%s is a number\n", arg); break; case XPATH_STRING: fprintf(ctxt->output, "%s is a string\n", arg); break; case XPATH_USERS: fprintf(ctxt->output, "%s is user-defined\n", arg); break; case XPATH_XSLT_TREE: fprintf(ctxt->output, "%s is an XSLT value tree\n", arg); break; } xmlXPathFreeObject(list); } else { fprintf(ctxt->output, "%s: no such node\n", arg); } ctxt->pctxt->node = NULL; #endif /* LIBXML_XPATH_ENABLED */ } } else if (!strcmp(command, "cd")) { if (arg[0] == 0) { ctxt->node = (xmlNodePtr) ctxt->doc; } else { #ifdef LIBXML_XPATH_ENABLED int l; ctxt->pctxt->node = ctxt->node; l = strlen(arg); if ((l >= 2) && (arg[l - 1] == '/')) arg[l - 1] = 0; list = xmlXPathEval((xmlChar *) arg, ctxt->pctxt); if (list != NULL) { switch (list->type) { case XPATH_UNDEFINED: fprintf(ctxt->output, "%s: no such node\n", arg); break; case XPATH_NODESET: if (list->nodesetval != NULL) { if (list->nodesetval->nodeNr == 1) { ctxt->node = list->nodesetval->nodeTab[0]; if ((ctxt->node != NULL) && (ctxt->node->type == XML_NAMESPACE_DECL)) { fprintf(ctxt->output, "cannot cd to namespace\n"); ctxt->node = NULL; } } else fprintf(ctxt->output, "%s is a %d Node Set\n", arg, list->nodesetval->nodeNr); } else fprintf(ctxt->output, "%s is an empty Node Set\n", arg); break; case XPATH_BOOLEAN: fprintf(ctxt->output, "%s is a Boolean\n", arg); break; case XPATH_NUMBER: fprintf(ctxt->output, "%s is a number\n", arg); break; case XPATH_STRING: fprintf(ctxt->output, "%s is a string\n", arg); break; case XPATH_USERS: fprintf(ctxt->output, "%s is user-defined\n", arg); break; case XPATH_XSLT_TREE: fprintf(ctxt->output, "%s is an XSLT value tree\n", arg); break; } xmlXPathFreeObject(list); } else { fprintf(ctxt->output, "%s: no such node\n", arg); } ctxt->pctxt->node = NULL; #endif /* LIBXML_XPATH_ENABLED */ } #ifdef LIBXML_OUTPUT_ENABLED } else if (!strcmp(command, "cat")) { if (arg[0] == 0) { xmllintShellCat(ctxt, NULL, ctxt->node, NULL); } else { #ifdef LIBXML_XPATH_ENABLED ctxt->pctxt->node = ctxt->node; list = xmlXPathEval((xmlChar *) arg, ctxt->pctxt); if (list != NULL) { switch (list->type) { case XPATH_UNDEFINED: fprintf(ctxt->output, "%s: no such node\n", arg); break; case XPATH_NODESET:{ int indx; if (list->nodesetval == NULL) break; for (indx = 0; indx < list->nodesetval->nodeNr; indx++) { if (i > 0) fprintf(ctxt->output, " -------\n"); xmllintShellCat(ctxt, NULL, list->nodesetval-> nodeTab[indx], NULL); } break; } case XPATH_BOOLEAN: fprintf(ctxt->output, "%s is a Boolean\n", arg); break; case XPATH_NUMBER: fprintf(ctxt->output, "%s is a number\n", arg); break; case XPATH_STRING: fprintf(ctxt->output, "%s is a string\n", arg); break; case XPATH_USERS: fprintf(ctxt->output, "%s is user-defined\n", arg); break; case XPATH_XSLT_TREE: fprintf(ctxt->output, "%s is an XSLT value tree\n", arg); break; } xmlXPathFreeObject(list); } else { fprintf(ctxt->output, "%s: no such node\n", arg); } ctxt->pctxt->node = NULL; #endif /* LIBXML_XPATH_ENABLED */ } #endif /* LIBXML_OUTPUT_ENABLED */ } else { fprintf(ctxt->output, "Unknown command %s\n", command); } free(cmdline); /* not xmlFree here ! */ cmdline = NULL; } #ifdef LIBXML_XPATH_ENABLED xmlXPathFreeContext(ctxt->pctxt); #endif /* LIBXML_XPATH_ENABLED */ if (ctxt->loaded) { xmlFreeDoc(ctxt->doc); } if (ctxt->filename != NULL) xmlFree(ctxt->filename); xmlFree(ctxt); if (cmdline != NULL) free(cmdline); /* not xmlFree here ! */ }