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URL rewritten completely. Error handling not implemented in public

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1999-04-24  bertrand <Bertrand.Guiheneuf@inria.fr>

	* camel/url-util.c (new_g_url): URL
	rewritten completely. Error handling not
	implemented in public functions.
	But URL scan works pretty well :)))

svn path=/trunk/; revision=874
This commit is contained in:
bertrand
1999-04-24 11:11:07 +00:00
committed by Bertrand Guiheneuf
parent 399f0e77bc
commit 0a2e9eef73
3 changed files with 251 additions and 54 deletions
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9
ChangeLog
View File

@ -1,3 +1,10 @@
1999-04-24 bertrand <Bertrand.Guiheneuf@inria.fr>
* camel/url-util.c (new_g_url): URL
rewritten completely. Error handling not
implemented in public functions.
But URL scan works pretty well :)))
1999-04-24 bertrand <Bertrand.Guiheneuf@inria.fr>
* camel/url-util.[ch]: I needed the url
@ -21,7 +28,7 @@
* camel/camel-store.h:
* camel/camel-folder.h:
correct declarations of structss
correct declarations of structs
1999-04-22 bertrand <Bertrand.Guiheneuf@inria.fr>

286
camel/url-util.c
View File

@ -31,20 +31,96 @@
Uniform Ressource Locators
Bertrand. */
/*
XXX TODO: recover the words between #'s or ?'s after the path */
#include <ctype.h> /* for isalpha */
#include <stdlib.h> /* for atoi */
#include "url-util.h"
typedef gboolean find_item_func(GString *url, GString **item, guint *position, gboolean *error);
typedef struct {
char *item_name;
GString **item_value;
find_item_func *find_func;
} FindStepStruct;
static gboolean find_protocol(GString *url, GString **item, guint *position, gboolean *error);
static gboolean find_user(GString *url, GString **item, guint *position, gboolean *error);
static gboolean find_passwd(GString *url, GString **item, guint *position, gboolean *error);
static gboolean find_host(GString *url, GString **item, guint *position, gboolean *error);
static gboolean find_port(GString *url, GString **item, guint *position, gboolean *error);
static gboolean find_path(GString *url, GString **item, guint *position, gboolean *error);
/**
* new_g_url: create an Gurl object from a string
* @url_string: The string containing the URL to scan
*
* This routine takes a GString and parses it as an
* URL of the form:
* protocol://user:password@host:port/path
* there is no test on the values. For example,
* "port" can be a string, not only a number !
* The Gurl structure fields ar filled with
* the scan results. When a member of the
* general URL can not be found, the corresponding
* Gurl member is NULL
*
* Return value: a Gurl structure containng the URL items.
**/
Gurl *new_g_url(GString* url_string)
{
Gurl *g_url;
GString *protocol;
GString *user;
GString *passwd;
GString *host;
GString *port;
GString *path;
guint position=0;
gboolean error;
gboolean found;
guint i;
g_url = g_new(Gurl,1);
#define NB_STEP_URL 6
{
FindStepStruct step[NB_STEP_URL] = {
{ "protocol", &(g_url->protocol), find_protocol},
{ "user", &(g_url->user), find_user},
{ "password", &(g_url->passwd), find_passwd},
{ "host", &(g_url->host), find_host},
{ "port", &(g_url->port), find_port},
{ "path", &(g_url->path), find_path}
};
for (i=0; i<NB_STEP_URL; i++) {
found = step[i].find_func(url_string,
step[i].item_value,
&position,
&error);
}
}
return g_url;
}
/** So, yes, I must admit there would have been more elegant
ways to do this, but it works, and quite well :) */
static gboolean
find_protocol(GString *url, GString **protocol, guint *position, gboolean *error)
find_protocol(GString *url, GString **item, guint *position, gboolean *error)
{
guint i;
@ -55,7 +131,7 @@ find_protocol(GString *url, GString **protocol, guint *position, gboolean *error
str_url = url->str;
len_url = url->len;
*protocol = NULL;
*item = NULL;
*error = FALSE;
i=*position;
@ -71,7 +147,7 @@ find_protocol(GString *url, GString **protocol, guint *position, gboolean *error
{
str_protocol = g_strndup(str_url, i-3);
*protocol = g_string_new(str_protocol);
*item = g_string_new(str_protocol);
*position=i;
return TRUE;
}
@ -83,7 +159,7 @@ find_protocol(GString *url, GString **protocol, guint *position, gboolean *error
static gboolean
find_user(GString *url, GString **user, guint *position, gboolean *error)
find_user(GString *url, GString **item, guint *position, gboolean *error)
{
guint i;
guint at_pos;
@ -95,7 +171,7 @@ find_user(GString *url, GString **user, guint *position, gboolean *error)
str_url = url->str;
len_url = url->len;
*user = NULL;
*item = NULL;
i=*position;
@ -110,21 +186,21 @@ find_user(GString *url, GString **user, guint *position, gboolean *error)
while ( (i<at_pos) && (str_url[i] != ':') ) i++;
/* now if i has not been incremented at all, there is no user */
if (i == *position) return FALSE;
if (i == *position) {
(*position)++;
return FALSE;
}
str_user = g_strndup(str_url+ *position, i - *position);
*user = g_string_new(str_user);
*item = g_string_new(str_user);
if (i<at_pos) *position=i+1; /* there was a ':', skip it */
else *position=i;
return TRUE;
return TRUE;
}
static gboolean
find_passwd(GString *url, GString **passwd, guint *position, gboolean *error)
find_passwd(GString *url, GString **item, guint *position, gboolean *error)
{
guint i;
@ -135,7 +211,7 @@ find_passwd(GString *url, GString **passwd, guint *position, gboolean *error)
str_url = url->str;
len_url = url->len;
*passwd = NULL;
*item = NULL;
i=*position;
@ -150,24 +226,132 @@ find_passwd(GString *url, GString **passwd, guint *position, gboolean *error)
}
str_passwd = g_strndup(str_url+ *position, i - *position);
*passwd = g_string_new(str_passwd);
*item = g_string_new(str_passwd);
*position=i+1; /* skip it the '@' */
return TRUE;
}
static gboolean
find_host(GString *url, GString **item, guint *position, gboolean *error)
{
guint i;
guint slash_pos;
gchar *str_url;
gint len_url;
gchar *str_host;
str_url = url->str;
len_url = url->len;
*item = NULL;
i=*position;
/* find a '/' */
while ((i<len_url) && (str_url[i] != '/')) i++;
slash_pos = i;
i = *position;
/* find a ':' */
while ( (i<slash_pos) && (str_url[i] != ':') ) i++;
/* at this point if i has not been incremented at all,
there is no host */
if (i == *position) {
(*position)++;
return FALSE;
}
str_host = g_strndup(str_url+ *position, i - *position);
*item = g_string_new(str_host);
if (i<slash_pos) *position=i+1; /* there was a ':', skip it */
else *position=i;
return TRUE;
}
static gboolean
find_port(GString *url, GString **item, guint *position, gboolean *error)
{
guint i;
guint slash_pos;
gchar *str_url;
gint len_url;
gchar *str_port;
str_url = url->str;
len_url = url->len;
*item = NULL;
i=*position;
/* find a '/' */
while ((i<len_url) && (str_url[i] != '/')) i++;
slash_pos = i;
i = *position;
/* find a ':' */
while ( (i<slash_pos) && (str_url[i] != ':') ) i++;
/* at this point if i has not been incremented at all,
there is no port */
if (i == *position) return FALSE;
str_port = g_strndup(str_url+ *position, i - *position);
*item = g_string_new(str_port);
*position = i;
return TRUE;
}
static gboolean
find_path(GString *url, GString **item, guint *position, gboolean *error)
{
guint i;
gchar *str_url;
gint len_url;
gchar *str_path;
str_url = url->str;
len_url = url->len;
*item = NULL;
i=*position;
/* find a '#' */
while ((i<len_url) && (str_url[i] != '#') && (str_url[i] != '?')) i++;
/*i has not been incremented at all, there is no path */
if (i == *position) return FALSE;
str_path = g_strndup(str_url+ *position, i - *position);
*item = g_string_new(str_path);
*position=i;
return TRUE;
}
/* to tests this file :
gcc -o test_url_util `glib-config --cflags` -DTEST_URL_UTIL url-util.c `glib-config --libs
gcc -o test_url_util `glib-config --cflags` -DTEST_URL_UTIL url-util.c `glib-config --libs`
./test_url_util URL
*/
#ifdef TEST_URL_UTIL
int
main (int argc, char **argv)
{
@ -176,47 +360,43 @@ main (int argc, char **argv)
GString *protocol;
GString *user;
GString *passwd;
GString *host;
GString *port;
GString *path;
guint position=0;
gboolean error;
gboolean found;
guint i;
guint i_pos;
#define NB_STEP_TEST 6
FindStepStruct test_step[NB_STEP_TEST] = {
{ "protocol", &protocol, find_protocol},
{ "user", &user, find_user},
{ "password", &passwd, find_passwd},
{ "host", &host, find_host},
{ "port", &port, find_port},
{ "path", &path, find_path}
};
url = g_string_new(argv[1]);
printf("URL to test : %s\n\n", url->str);
/* Try to find the protocol */
found = find_protocol(url, &protocol, &position, &error);
if (found) {
printf("protocol found : %s\n", protocol->str);
} else printf("protocol not found in URL\n\n");
printf("posistion of the next item:\n");
printf("%s\n", url->str);
for(i=0; i<position; i++) printf(" ");
printf("^\n");
for (i=0; i<NB_STEP_TEST; i++) {
found = test_step[i].find_func(url,
test_step[i].item_value,
&position,
&error);
if (found) {
printf("\t\t\t\t** %s found : %s\n",
test_step[i].item_name,
(*test_step[i].item_value)->str);
} else printf("** %s not found in URL\n", test_step[i].item_name);
printf("next item position:\n");
printf("%s\n", url->str);
for(i_pos=0; i_pos<position; i_pos++) printf(" ");
printf("^\n");
/* Try to find the user name */
found = find_user(url, &user, &position, &error);
if (found) {
printf("name found : %s\n", user->str);
} else printf("user name not found in URL\n");
printf("posistion of the next item:\n");
printf("%s\n", url->str);
for(i=0; i<position; i++) printf(" ");
printf("^\n");
}
/* Try to find the password */
found = find_passwd(url, &passwd, &position, &error);
if (found) {
printf("passwd found : %s\n", passwd->str);
printf("\n");
} else printf("passwd not found in URL\n");
printf("posistion of the next item:\n");
printf("%s\n", url->str);
for(i=0; i<position; i++) printf(" ");
printf("^\n");
return 0;
}
#endif /* TEST_URL_UTIL */

10
camel/url-util.h
View File

@ -31,6 +31,16 @@ extern "C" {
#pragma }
#endif /* __cplusplus */
typedef struct {
GString *protocol;
GString *user;
GString *passwd;
GString *host;
GString *port;
GString *path;
} Gurl;
Gurl *new_g_url(GString* url_string);
#ifdef __cplusplus
}