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parse app Categories better. parse a list of strings into a gchar**

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This commit is contained in:
Dana Jansens 2010-06-03 13:53:19 -04:00
parent 78a8f407a9
commit b025a0268f
4 changed files with 97 additions and 43 deletions
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114
obt/ddparse.c
View file

@ -85,7 +85,7 @@ static void parse_value_free(ObtDDParseValue *v)
g_free(v->value.string); break;
case OBT_DDPARSE_STRINGS:
case OBT_DDPARSE_LOCALESTRINGS:
g_free(v->value.strings.s);
g_strfreev(v->value.strings.a);
v->value.strings.n = 0;
break;
case OBT_DDPARSE_BOOLEAN:
@ -120,40 +120,39 @@ static void parse_group_free(ObtDDParseGroup *g)
/*! Reads an input string, strips out invalid stuff, and parses
backslash-stuff.
If @nstrings is not NULL, then it splits the output string at ';'
characters. They are all returned in the same string with null zeros
between them, @nstrings is set to the number of such strings.
*/
static gchar* parse_value_string(const gchar *in,
gboolean locale,
gulong *nstrings,
gboolean semicolonterminate,
gulong *len,
const ObtDDParse *const parse,
gboolean *error)
{
const gint bytes = strlen(in);
gint bytes;
gboolean backslash;
gchar *out, *o;
const gchar *end, *i;
g_return_val_if_fail(in != NULL, NULL);
if (!locale) {
end = in + bytes;
for (i = in; i < end; ++i) {
if ((guchar)*i >= 127 || (guchar)*i < 32) {
/* non-control character ascii */
end = i;
parse_error("Invalid bytes in string", parse, error);
break;
}
/* find the end/size of the string */
backslash = FALSE;
for (end = in; *end; ++end) {
if (semicolonterminate) {
if (backslash) backslash = FALSE;
else if (*end == '\\') backslash = TRUE;
else if (*end == ';') break;
}
}
else if (!g_utf8_validate(in, bytes, &end))
parse_error("Invalid bytes in localestring", parse, error);
bytes = end - in;
if (nstrings) *nstrings = 1;
g_return_val_if_fail(in != NULL, NULL);
if (locale && !g_utf8_validate(in, bytes, &end)) {
parse_error("Invalid bytes in localestring", parse, error);
bytes = end - in;
}
out = g_new(char, bytes + 1);
if (len) *len = 0;
i = in; o = out;
backslash = FALSE;
while (i < end) {
@ -181,18 +180,16 @@ static gchar* parse_value_string(const gchar *in,
}
else if (*i == '\\')
backslash = TRUE;
else if (*i == ';' && nstrings) {
++nstrings;
*o = '\0';
}
else if ((guchar)*i == 127 || (guchar)*i < 32) {
else if ((guchar)*i >= 127 || (guchar)*i < 32) {
/* avoid ascii control characters */
parse_error("Found control character in string", parse, error);
break;
}
else {
memcpy(o, i, next-i);
o += next-i;
const gulong s = next-i;
memcpy(o, i, s);
o += s;
if (len) *len += s;
}
i = next;
}
@ -200,6 +197,44 @@ static gchar* parse_value_string(const gchar *in,
return out;
}
/*! Reads a list of input strings, strips out invalid stuff, and parses
backslash-stuff.
*/
static gchar** parse_value_strings(const gchar *in,
gboolean locale,
gulong *nstrings,
const ObtDDParse *const parse,
gboolean *error)
{
gchar **out;
const gchar *i;
out = g_new(gchar*, 1);
out[0] = NULL;
*nstrings = 0;
i = in;
while (TRUE) {
gchar *a;
gulong len;
a = parse_value_string(i, locale, TRUE, &len, parse, error);
i += len;
if (len) {
(*nstrings)++;
out = g_renew(gchar*, out, *nstrings+1);
out[*nstrings-1] = a;
out[*nstrings] = NULL;
}
if (!*i) break; /* no more strings */
++i;
}
return out;
}
static guint parse_value_environments(const gchar *in,
const ObtDDParse *const parse,
gboolean *error)
@ -606,13 +641,13 @@ static gboolean parse_desktop_entry_value(gchar *key, const gchar *val,
gboolean percent;
gboolean found;
v.value.string = parse_value_string(val, FALSE, NULL, parse, error);
v.value.string = parse_value_string(val, FALSE, FALSE, NULL,
parse, error);
g_assert(v.value.string);
/* an exec string can only contain one of the file/url-opening %'s */
percent = found = FALSE;
for (c = v.value.string; *c; ++c) {
if (*c == '%') percent = !percent;
if (percent) {
switch (*c) {
case 'f':
@ -641,6 +676,7 @@ static gboolean parse_desktop_entry_value(gchar *key, const gchar *val,
case 'i':
case 'c':
case 'k':
case '%':
break;
default:
m = g_strdup_printf("Malformed Exec key, "
@ -648,28 +684,32 @@ static gboolean parse_desktop_entry_value(gchar *key, const gchar *val,
parse_error(m, parse, NULL); /* just a warning */
g_free(m);
}
percent = FALSE;
}
else if (*c == '%') percent = TRUE;
}
break;
}
case OBT_DDPARSE_STRING:
v.value.string = parse_value_string(val, FALSE, NULL, parse, error);
v.value.string = parse_value_string(val, FALSE, FALSE, NULL,
parse, error);
g_assert(v.value.string);
break;
case OBT_DDPARSE_LOCALESTRING:
v.value.string = parse_value_string(val, TRUE, NULL, parse, error);
v.value.string = parse_value_string(val, TRUE, FALSE, NULL,
parse, error);
g_assert(v.value.string);
break;
case OBT_DDPARSE_STRINGS:
v.value.strings.s = parse_value_string(val, FALSE, &v.value.strings.n,
parse, error);
g_assert(v.value.strings.s);
v.value.strings.a = parse_value_strings(val, FALSE, &v.value.strings.n,
parse, error);
g_assert(v.value.strings.a);
g_assert(v.value.strings.n);
break;
case OBT_DDPARSE_LOCALESTRINGS:
v.value.strings.s = parse_value_string(val, TRUE, &v.value.strings.n,
parse, error);
g_assert(v.value.strings.s);
v.value.strings.a = parse_value_strings(val, TRUE, &v.value.strings.n,
parse, error);
g_assert(v.value.strings.a);
g_assert(v.value.strings.n);
break;
case OBT_DDPARSE_BOOLEAN:

2
obt/ddparse.h
View file

@ -38,7 +38,7 @@ typedef struct _ObtDDParseValue {
union _ObtDDParseValueValue {
gchar *string;
struct _ObtDDParseValueStrings {
gchar *s;
gchar **a;
gulong n;
} strings;
gboolean boolean;

21
obt/link.c
View file

@ -51,6 +51,7 @@ struct _ObtLink {
GQuark *categories; /*!< Array of quarks representing the
application's categories */
gulong n_categories; /*!< Number of categories for the app */
ObtLinkAppStartup startup;
gchar *startup_wmclass;
@ -128,15 +129,17 @@ ObtLink* obt_link_from_ddfile(const gchar *ddname, GSList *paths,
/* parse link->d.app.exec to determine link->d.app.open */
percent = FALSE;
for (c = link->d.app.exec; *c; ++c) {
if (*c == '%') percent = !percent;
if (percent) {
switch (*c) {
case 'f': link->d.app.open = OBT_LINK_APP_SINGLE_LOCAL; break;
case 'F': link->d.app.open = OBT_LINK_APP_MULTI_LOCAL; break;
case 'u': link->d.app.open = OBT_LINK_APP_SINGLE_URL; break;
case 'U': link->d.app.open = OBT_LINK_APP_MULTI_URL; break;
default: percent = FALSE;
}
if (percent) break; /* found f/F/u/U */
}
else if (*c == '%') percent = TRUE;
}
if ((v = g_hash_table_lookup(keys, "TryExec"))) {
@ -172,11 +175,11 @@ ObtLink* obt_link_from_ddfile(const gchar *ddname, GSList *paths,
gchar *end;
link->d.app.categories = g_new(GQuark, v->value.strings.n);
link->d.app.n_categories = v->value.strings.n;
c = end = v->value.strings.s;
for (i = 0; i < v->value.strings.n; ++i) {
while (*end) ++end;
link->d.app.categories[i] = g_quark_from_string(c);
link->d.app.categories[i] =
g_quark_from_string(v->value.strings.a[i]);
c = end = end+1; /* next */
}
}
@ -219,3 +222,13 @@ void obt_link_unref(ObtLink *dd)
g_slice_free(ObtLink, dd);
}
}
const GQuark* obt_link_app_categories(ObtLink *e, gulong *n)
{
g_return_val_if_fail(e != NULL, NULL);
g_return_val_if_fail(e->type == OBT_LINK_TYPE_APPLICATION, NULL);
g_return_val_if_fail(n != NULL, NULL);
*n = e->d.app.n_categories;
return e->d.app.categories;
}

3
obt/link.h
View file

@ -100,7 +100,8 @@ const gchar* obt_link_app_executable (ObtLink *e);
/*! Returns the path in which the application should be run */
const gchar* obt_link_app_path (ObtLink *e);
gboolean obt_link_app_run_in_terminal (ObtLink *e);
const gchar** obt_link_app_mime_types (ObtLink *e);
const gchar*const* obt_link_app_mime_types (ObtLink *e);
const GQuark* obt_link_app_categories (ObtLink *e, gulong *n);
/*! Returns a combination of values in the ObtLinkAppOpen enum,
specifying if the application can be launched to open one or more files
and URLs. */