721a9390a716cb5448126538993dcae82d8fc5fc Merge parents 889acd8 340dfde max Sat May 5 17:10:43 2012 -0700 fixed conflict with chins stylesheet function. A better long-term solution would be to introduce functions like addStylesheet to htmshell and keep a list of stylesheets instead of 3 diff functions diff --cc src/lib/htmshell.c index 7d78e39,8aaeae9..fd08ee8 --- src/lib/htmshell.c +++ src/lib/htmshell.c @@@ -1,642 -1,633 +1,654 @@@ /* htmshell - a shell to wrap around programs that generate * html files. Write the html initial stuff (<head>, <body>, etc.) * and the final stuff too. Also catch errors here so that * the html final stuff is written even if the program has * to abort. * * This also includes a few routines to write commonly used * html constructs such as images, horizontal lines. etc. * * This file is copyright 2002 Jim Kent, but license is hereby * granted for all use - public, private or commercial. */ #include "common.h" #include "obscure.h" #include "cheapcgi.h" #include "htmshell.h" #include "errabort.h" #include "dnautil.h" jmp_buf htmlRecover; static bool NoEscape = FALSE; void htmlNoEscape() { NoEscape = TRUE; } void htmlDoEscape() { NoEscape = FALSE; } void htmlVaParagraph(char *line, va_list args) /* Print a line in it's own paragraph. */ { fputs("<P>", stdout); vfprintf(stdout, line, args); fputs("</P>\n", stdout); } void htmlParagraph(char *line, ...) { va_list args; va_start(args, line); htmlVaParagraph(line, args); va_end(args); } void htmlVaCenterParagraph(char *line, va_list args) /* Center a line in it's own paragraph. */ { fputs("<P ALIGN=\"CENTER\">", stdout); vfprintf(stdout, line, args); fputs("</P>\n", stdout); } void htmlCenterParagraph(char *line, ...) { va_list args; va_start(args, line); htmlVaCenterParagraph(line, args); va_end(args); } void htmlHorizontalLine() /* Print a horizontal line. */ { printf("<HR ALIGN=\"CENTER\">"); } void htmHorizontalLine(FILE *f) /* Print a horizontal line. */ { fprintf(f, "<HR ALIGN=\"CENTER\">"); } void htmlNbSpaces(int count) /* Print a number of non-breaking spaces. */ { int i; for (i=0; i<count; ++i) printf(" "); } void htmTextOut(FILE *f, char *s) /* Print out string to file, if necessary replacing > with > and the like */ { char c; if (NoEscape) { fputs(s, f); return; } while ((c = *s++) != 0) { switch (c) { case '>': fputs(">", f); break; case '<': fputs("<", f); break; case '&': fputs("&", f); break; case '"': fputs(""", f); break; default: fputc(c, f); break; } } } void htmlTextOut(char *s) /* Print out string, if necessary replacing > with > and the like */ { htmTextOut(stdout, s); } char *htmlTextStripTags(char *s) /* Returns a cloned string with all html tags stripped out */ { if (s == NULL) return NULL; char *scrubbed = needMem(strlen(s)); char *from=s; char *to=scrubbed; while(*from!='\0') { if (*from == '<') { from++; while (*from!='\0' && *from != '>') from++; if (*from == '\0') // The last open tag was never closed! break; from++; } else *to++ = *from++; } return scrubbed; } char *htmlTextReplaceTagsWithChar(char *s, char ch) /* Returns a cloned string with all html tags replaced with given char (useful for tokenizing) */ { if (s == NULL) return NULL; char *scrubbed = needMem(strlen(s) + 1); char *from=s; char *to=scrubbed; while(*from!='\0') { if (*from == '<') { from++; *to++ = ch; while (*from!='\0' && *from != '>') from++; if (*from == '\0') // The last open tag was never closed! break; from++; } else *to++ = *from++; } *to = '\0'; return scrubbed; } char *htmlEncodeText(char *s,boolean tagsOkay) /* Returns a cloned string with quotes replaced by html codes. Changes ',",\n and if not tagsOkay >,<,& to code equivalents. This differs from cgiEncode as it handles text that will be displayed in an html page or tooltip style title. */ { int size = strlen(s) + 3; // Add some slop if(tagsOkay) size += countChars(s,'\n') * 4; else { size += countChars(s,'>' ) * 4; size += countChars(s,'<' ) * 4; size += countChars(s,'&' ) * 5; size += countChars(s,'\n') * 6; } size += countChars(s,'"' ) * 6; size += countChars(s,'\'') * 5; char *cleanQuote = needMem(size); safecpy(cleanQuote,size,s); // NOTE: While some internal HTML should work, a single quote (') will will screw it up! if(tagsOkay) strSwapStrs(cleanQuote, size,"\n","<BR>" ); // new lines also break the html else { strSwapStrs(cleanQuote, size,"&" ,"&" ); // '&' is not the start of a control char strSwapStrs(cleanQuote, size,">" ,">" ); // '>' is not the close of a tag strSwapStrs(cleanQuote, size,"<" ,"<" ); // '<' is not the open of a tag if(cgiClientBrowser(NULL,NULL,NULL) == btFF) strSwapStrs(cleanQuote, size,"\n","|"); // FF does not support! Use "|" for '|' instead else strSwapStrs(cleanQuote, size,"\n","
"); // '\n' is supported on some browsers } strSwapStrs(cleanQuote, size,"\"","""); // Shield double quotes strSwapStrs(cleanQuote, size,"'" ,"'" ); // Shield single quotes return cleanQuote; } char *attributeEncode(char *str) { // encode double and single quotes in a string to be used as an element attribute return replaceChars(replaceChars(str, "\"", """), "'", "'"); } char *htmlWarnStartPattern() /* Return starting pattern for warning message. */ { return "<!-- HGERROR-START -->\n"; } char *htmlWarnEndPattern() /* Return ending pattern for warning message. */ { return "<!-- HGERROR-END -->\n"; } void htmlWarnBoxSetup(FILE *f) /* Creates an invisible, empty warning box than can be filled with errors * and then made visible. */ { // Only set this up once per page static boolean htmlWarnBoxSetUpAlready=FALSE; if(htmlWarnBoxSetUpAlready) return; htmlWarnBoxSetUpAlready=TRUE; // NOTE: Making both IE and FF work is almost impossible. Currently, in IE, if the message // is forced to the top (calling this routine after <BODY> then the box is not resizable // (dynamically adjusting to its contents). But if this setup is done later in the page // (at first warning), then IE does resize it. Why? // FF3.0 (but not FF2.0) was resizable with the following, but it took some experimentation. // Remember what worked nicely on FF3.0: // "var app=navigator.appName.substr(0,9); " // "if(app == 'Microsoft') {warnBox.style.display='';} else {warnBox.style.display=''; warnBox.style.width='auto';}" fprintf(f, "<script type='text/javascript'>\n"); fprintf(f, "document.write(\"<center>" "<div id='warnBox' style='display:none; background-color:Beige; " "border: 3px ridge DarkRed; width:640px; padding:10px; margin:10px; " "text-align:left;'>" "<CENTER><B id='warnHead' style='color:DarkRed;'></B></CENTER>" "<UL id='warnList'></UL>" "<CENTER><button id='warnOK' onclick='hideWarnBox();return false;'></button></CENTER>" "</div></center>\");\n"); fprintf(f,"function showWarnBox() {" "document.getElementById('warnOK').innerHTML=' OK ';" "var warnBox=document.getElementById('warnBox');" "warnBox.style.display=''; warnBox.style.width='65%%';" "document.getElementById('warnHead').innerHTML='Warning/Error(s):';" "window.scrollTo(0, 0);" "}\n"); fprintf(f,"function hideWarnBox() {" "var warnBox=document.getElementById('warnBox');" "warnBox.style.display='none';warnBox.innerHTML='';" "var endOfPage = document.body.innerHTML.substr(document.body.innerHTML.length-20);" "if(endOfPage.lastIndexOf('-- ERROR --') > 0) { history.back(); }" "}\n"); // Note that the OK button goes to prev page when this page is interrupted by the error. fprintf(f,"window.onunload = function(){}; // Trick to avoid FF back button issue.\n"); fprintf(f,"</script>\n"); } void htmlVaWarn(char *format, va_list args) /* Write an error message. */ { va_list argscp; va_copy(argscp, args); htmlWarnBoxSetup(stdout); // sets up the warnBox if it hasn't already been done. char warning[1024]; vsnprintf(warning,sizeof(warning),format, args); char *encodedMessage = htmlEncodeText(warning,TRUE); // NOTE: While some internal HTML should work, a single quote (') will will screw it all up! printf("<script type='text/javascript'>{showWarnBox();" "var warnList=document.getElementById('warnList');" "warnList.innerHTML += '<li>%s</li>';}</script><!-- ERROR -->\n",encodedMessage); // NOTE that "--ERROR --" is needed at the end of this print!! freeMem(encodedMessage); /* Log useful CGI info to stderr */ logCgiToStderr(); /* write warning/error message to stderr so they get logged. */ vfprintf(stderr, format, argscp); va_end(argscp); fflush(stderr); } void htmlAbort() /* Terminate HTML file. */ { longjmp(htmlRecover, -1); } void htmlMemDeath() { errAbort("Out of memory."); } static void earlyWarningHandler(char *format, va_list args) /* Write an error message so user can see it before page is really started. */ { static boolean initted = FALSE; if (!initted) { htmlStart("Very Early Error"); initted = TRUE; } printf("%s", htmlWarnStartPattern()); htmlVaParagraph(format,args); printf("%s", htmlWarnEndPattern()); } static void earlyAbortHandler() /* Exit close web page during early abort. */ { printf("</BODY></HTML>"); exit(0); } void htmlPushEarlyHandlers() /* Push stuff to close out web page to make sensible error * message during initialization. */ { pushWarnHandler(earlyWarningHandler); pushAbortHandler(earlyAbortHandler); } static char *htmlStyle = "<STYLE TYPE=\"text/css\">" ".hiddenText {background-color: silver}" ".normalText {background-color: white}" "</STYLE>\n"; char *htmlStyleUndecoratedLink = /* Style that gets rid of underline of links. */ "<STYLE TYPE=\"text/css\"> " "<!-- " "A {text-decoration: none} " "-->" "</STYLE>\n"; + // optional style set by theme, added after main style and thus + // can overwrite main style settings + static char *htmlStyleTheme = NULL; + void htmlSetStyle(char *style) /* Set document wide style. A favorite style to * use for many purposes is htmlStyleUndecoratedLink * which will remove underlines from links. * Needs to be called before htmlStart or htmShell. */ { htmlStyle = style; } - +static char *htmlStyleSheet = NULL; +void htmlSetStyleSheet(char *styleSheet) +/* Set document wide style sheet by adding css name to HEAD part. + * Needs to be called before htmlStart or htmShell. */ +{ +htmlStyleSheet = styleSheet; +} + +static char *htmlFormClass = NULL; +void htmlSetFormClass(char *formClass) +/* Set class in the BODY part. */ +{ +htmlFormClass = formClass; +} + + void htmlSetStyleTheme(char *style) + /* Set theme style. Needs to be called before htmlStart or htmShell. */ + { + htmlStyleTheme = style; + } + static char *htmlBackground = NULL; void htmlSetBackground(char *imageFile) /* Set background - needs to be called before htmlStart * or htmShell. */ { htmlBackground = imageFile; } static int htmlBgColor = 0xFFFFFF; boolean gotBgColor = FALSE; void htmlSetBgColor(int color) /* Set background color - needs to be called before htmlStart * or htmShell. */ { htmlBgColor = color; gotBgColor = TRUE; } void htmlSetCookie(char* name, char* value, char* expires, char* path, char* domain, boolean isSecure) /* create a cookie with the given stats */ { char* encoded_name; char* encoded_value; char* encoded_path = NULL; encoded_name = cgiEncode(name); encoded_value = cgiEncode(value); if(path != NULL) encoded_path = cgiEncode(path); printf("Set-Cookie: %s=%s; ", encoded_name, encoded_value); if(expires != NULL) printf("expires=%s; ", expires); if(path != NULL) printf("path=%s; ", encoded_path); if(domain != NULL) printf("domain=%s; ", domain); if(isSecure == TRUE) printf("secure"); printf("\n"); } void _htmStartWithHead(FILE *f, char *head, char *title, boolean printDocType, int dirDepth) /* Write out bits of header that both stand-alone .htmls * and CGI returned .htmls need, including optional head info */ { if (printDocType) { //#define TOO_TIMID_FOR_CURRENT_HTML_STANDARDS #ifdef TOO_TIMID_FOR_CURRENT_HTML_STANDARDS fputs("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 3.2//EN\">\n", f); #else///ifndef TOO_TIMID_FOR_CURRENT_HTML_STANDARDS char *browserVersion; if (btIE == cgiClientBrowser(&browserVersion, NULL, NULL) && *browserVersion < '8') fputs("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 3.2//EN\">\n", f); else fputs("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">",f); // Strict would be nice since it fixes atleast one IE problem (use of :hover CSS pseudoclass) //fputs("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01//EN\" \"http://www.w3.org/TR/html4/strict.dtd\">\n",f); #endif///ndef TOO_TIMID_FOR_CURRENT_HTML_STANDARDS } fputs("<HTML>", f); fprintf(f,"<HEAD>\n%s<TITLE>%s</TITLE>\n", head, title); fprintf(f, "\t<META http-equiv=\"Content-Script-Type\" content=\"text/javascript\">\n"); if (htmlStyle != NULL) fputs(htmlStyle, f); +if (htmlStyleSheet != NULL) - fprintf(f,"<link href=\"%s\" rel=\"stylesheet\" type=\"text/css\">\n" ++ fprintf(f,"<link href=\"%s\" rel=\"stylesheet\" type=\"text/css\">\n" + , htmlStyleSheet); + if (htmlStyleTheme != NULL) + fputs(htmlStyleTheme, f); ++ fputs("</HEAD>\n\n",f); fputs("<BODY",f); +if (htmlFormClass != NULL ) + fprintf(f, " CLASS=\"%s\"", htmlFormClass); if (htmlBackground != NULL ) fprintf(f, " BACKGROUND=\"%s\"", htmlBackground); if (gotBgColor) fprintf(f, " BGCOLOR=\"#%X\"", htmlBgColor); fputs(">\n",f); htmlWarnBoxSetup(f); } void htmlStart(char *title) /* Write the start of an html from CGI */ { puts("Content-Type:text/html"); puts("\n"); _htmStartWithHead(stdout, "", title, TRUE, 1); } void htmStartWithHead(FILE *f, char *head, char *title) /* Write the start of a stand alone .html file, plus head info */ { _htmStartWithHead(f, head, title, TRUE, 1); } void htmStart(FILE *f, char *title) /* Write the start of a stand alone .html file. */ { htmStartWithHead(f, "", title); } void htmStartDirDepth(FILE *f, char *title, int dirDepth) /* Write the start of a stand alone .html file. dirDepth is the number of levels * beneath apache root that caller's HTML will appear to the web client. * E.g. if writing HTML from cgi-bin, dirDepth is 1; if trash/body/, 2. */ { _htmStartWithHead(f, "", title, TRUE, dirDepth); } /* Write the end of an html file */ void htmEnd(FILE *f) { fputs("\n</BODY>\n</HTML>\n", f); } /* Write the end of a stand-alone html file */ void htmlEnd() { htmEnd(stdout); } void htmlBadVar(char *varName) { cgiBadVar(varName); } /* Display centered image file. */ void htmlImage(char *fileName, int width, int height) { printf("<P ALIGN=\"CENTER\"><IMG SRC=\"%s\" WIDTH=\"%d\" HEIGHT=\"%d\" ALIGN=\"BOTTOM\" BORDER=\"0\"></P>", fileName, width, height); } void htmErrOnlyShell(void (*doMiddle)()) /* Wrap error recovery around call to doMiddle. */ { int status; /* Set up error recovery. */ status = setjmp(htmlRecover); /* Do your main thing. */ if (status == 0) { doMiddle(); } } void htmEmptyShell(void (*doMiddle)(), char *method) /* Wrap error recovery and and input processing around call to doMiddle. */ { int status; /* Set up error recovery (for out of memory and the like) * so that we finish web page regardless of problems. */ pushAbortHandler(htmlAbort); pushWarnHandler(htmlVaWarn); status = setjmp(htmlRecover); /* Do your main thing. */ if (status == 0) { doMiddle(); } popWarnHandler(); popAbortHandler(); } /* Wrap an html file around the passed in function. * The passed in function is already in the body. It * should just make paragraphs and return. */ void htmShell(char *title, void (*doMiddle)(), char *method) { /* Preamble. */ dnaUtilOpen(); htmlStart(title); /* Call wrapper for error handling. */ htmEmptyShell(doMiddle, method); /* Post-script. */ htmlEnd(); } /* Wrap an html file around the passed in function. * The passed in function is already in the body. It * should just make paragraphs and return. * Method should be "query" or "get" or "post". param title - The HTML page title param head - The head text: can be a refresh directive or javascript param method - The function pointer to execute in the middle param method - The browser request method to use */ void htmShellWithHead( char *title, char *head, void (*doMiddle)(), char *method) { /* Preamble. */ dnaUtilOpen(); puts("Content-Type:text/html"); puts("\n"); puts("<HTML>"); printf("<HEAD>%s<TITLE>%s</TITLE>\n</HEAD>\n\n", head, title); if (htmlBackground == NULL) puts("<BODY>\n"); else printf("<BODY BACKGROUND=\"%s\">\n", htmlBackground); htmlWarnBoxSetup(stdout);// Sets up a warning box which can be filled with errors as they occur /* Call wrapper for error handling. */ htmEmptyShell(doMiddle, method); /* Post-script. */ htmlEnd(); } /* Include an HTML file in a CGI */ void htmlIncludeFile(char *path) { char *str = NULL; size_t len = 0; if (path == NULL) errAbort("Program error: including null file"); if (!fileExists(path)) errAbort("Missing file %s", path); readInGulp(path, &str, &len); if (len <= 0) errAbort("Error reading included file: %s", path); puts(str); freeMem(str); } /* Include an HTML file in a CGI. * The file path is relative to the web server document root */ void htmlIncludeWebFile(char *file) { char path[256]; char *docRoot = "/usr/local/apache/htdocs"; safef(path, sizeof path, "%s/%s", docRoot, file); htmlIncludeFile(path); }