man Ns_UrlToFile (Fonctions bibliothèques) - URL to file mapping procedures
NAME
Ns_SetUrlToFileProc, Ns_UrlIsDir, Ns_UrlIsFile, Ns_UrlToFile - URL to file mapping procedures
SYNOPSIS
#include "ns.h" void Ns_SetUrlToFileProc(char *server, Ns_UrlToFileProc *procPtr) int Ns_UrlIsDir(char *server, char *url) int Ns_UrlIsFile(char *server, char *url) int Ns_UrlToFile(Ns_DString *dsPtr, char *server, char *url)
DESCRIPTION
These functions map URL paths to real files and directories. They are normally used to determine whether a given URL has a corresponding file or directory and to return the real filesystem path that corresponds to the URL.
- Ns_SetUrlToFileProc(server, procPtr)
Set a pointer to a custom routine to use in place of Ns_UrlToFile.
- Ns_UrlIsDir(server, url)
Construct a directory name by appending the URL to the current AOLserver pages directory for the specified server. Return NS_TRUE if the directory exists; NS_FALSE otherwise.
- Ns_UrlIsFile(server, url)
Construct a file name by appending the URL to the current AOLserver pages directory for the specified server. Return NS_TRUE if the file exists and is a regular file; NS_FALSE otherwise.
Example:
/* IsFile - Simple request to determine if an URL is a file. */ int IsFile(Ns_Conn *conn, void *ctx) { int isfile; char *server;
server = Ns_ConnServer(conn); isfile = Ns_UrlIsFile(server, conn->request->url); if (isfile) { Ns_ConnReturnNotice(conn, 200, "File", NULL); } else { Ns_ConnReturnNotice(conn, 200, "Not a File", NULL); } return NS_OK; }
- Ns_UrlToFile(dsPtr, server, url)
The Ns_UrlToFile function writes the full path name of the file corresponding to the given URL. The result is appended to the Ns_DString. The function does not check that the file exists or is readable by the AOLserver process. This function returns a status of NS_OK or NS_ERROR.
Normally this prepends the pageroot to the URL path. If you have created your own custom routine and used Ns_SetUrlToFileProc to point to it, your routine is called instead. This could be used to create, for example, a module that takes the given URL and maps it to a file in a different way than the default Ns_UrlToFile routine.
Example:
/* A simple page fetch request function. */ int SimpleFetch(Ns_Conn *conn, void *ctx) { Ns_DString ds; FILE fp; char *server; Ns_DStringInit(&ds);
server = Ns_ConnServer(conn); Ns_UrlToFile(&ds, server, conn->request->url); fp = fopen(ds.string, "r"); Ns_ConnSendOpenFp(conn, fp, -1); fclose(fp); Ns_DStringFree(&ds); return NS_OK; }