mirror of https://github.com/BOINC/boinc.git
147 lines
3.6 KiB
C
147 lines
3.6 KiB
C
// The contents of this file are subject to the Mozilla Public License
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// Version 1.0 (the "License"); you may not use this file except in
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// compliance with the License. You may obtain a copy of the License at
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// http://www.mozilla.org/MPL/
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//
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// Software distributed under the License is distributed on an "AS IS"
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// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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// License for the specific language governing rights and limitations
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// under the License.
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//
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// The Original Code is the Berkeley Open Infrastructure for Network Computing.
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//
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// The Initial Developer of the Original Code is the SETI@home project.
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// Portions created by the SETI@home project are Copyright (C) 2002
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// University of California at Berkeley. All Rights Reserved.
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//
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// Contributor(s):
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//
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// A very crude interface for parsing XML files;
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// assumes all elements are either single-line or
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// have start and end tags on separate lines.
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// This is meant to be used ONLY for parsing XML files produced
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// by the BOINC scheduling server or client.
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// Could replace this with a more general parser.
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#ifdef _WIN32
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#include "windows.h"
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#endif
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#include <string.h>
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#include <stdlib.h>
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#include "parse.h"
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#include "error_numbers.h"
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// return true if the tag appears in the line
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//
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bool match_tag(char* buf, char* tag) {
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if (strstr(buf, tag)) return true;
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return false;
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}
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// parse an integer of the form <tag>1234</tag>
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// return true if it's there
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// Note: this doesn't check for the end tag
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//
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bool parse_int(char* buf, char* tag, int& x) {
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char* p = strstr(buf, tag);
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if (!p) return false;
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x = atoi(p+strlen(tag));
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return true;
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}
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// Same, for doubles
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//
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bool parse_double(char* buf, char* tag, double& x) {
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char* p = strstr(buf, tag);
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if (!p) return false;
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x = atof(p+strlen(tag));
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return true;
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}
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// parse a string of the form <tag>string</tag>
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//
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bool parse_str(char* buf, char* tag, char* dest, int len) {
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char* p = strstr(buf, tag);
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if (!p) return false;
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p = strchr(p, '>');
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char* q = strchr(p+1, '<');
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*q = 0;
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strncpy(dest, p+1, len);
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dest[len-1] = 0;
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return true;
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}
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// parse a string of the form name="string"
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//
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void parse_attr(char* buf, char* name, char* dest, int len) {
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char* p, *q;
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strcpy(dest, "");
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p = strstr(buf, name);
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if (!p) return;
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p = strchr(p, '"');
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if (!p) return;
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q = strchr(p+1, '"');
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if (!q) return;
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*q = 0;
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strncpy(dest, p+1, len);
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dest[len-1] = 0;
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}
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void copy_stream(FILE* in, FILE* out) {
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char buf[1024];
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int n, m;
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while (1) {
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n = fread(buf, 1, 1024, in);
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m = fwrite(buf, 1, n, out);
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if (n < 1024) break;
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}
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}
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// append to a malloc'd string
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//
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void strcatdup(char*& p, char* buf) {
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p = (char*)realloc(p, strlen(p) + strlen(buf)+1);
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if (!p) {
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fprintf(stderr, "strcatdup: realloc failed\n");
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exit(1);
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}
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strcat(p, buf);
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}
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// copy from a file to a malloc'd string until the end tag is reached
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//
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int dup_element_contents(FILE* in, char* end_tag, char** pp) {
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char buf[256];
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char* p = strdup("");
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while (fgets(buf, 256, in)) {
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if (strstr(buf, end_tag)) {
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*pp = p;
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return 0;
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}
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strcatdup(p, buf);
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}
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fprintf(stderr, "dup_element_contents(): no end tag\n");
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return 1;
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}
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// read a file into a malloc'd string
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//
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int read_file_malloc(char* pathname, char*& str) {
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char buf[256];
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FILE* f;
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f = fopen(pathname, "r");
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if (!f) return -1;
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str = strdup("");
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while (fgets(buf, 256, f)) {
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strcatdup(str, buf);
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}
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fclose(f);
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return 0;
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}
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