tray: better errors when parsing index.theme
This commit is contained in:
Ian Fan
Simon Ser
parent
b54f5e170a
commit
66f0c91bb8
|
|
@ -14,6 +14,10 @@
|
|||
#include "log.h"
|
||||
#include "stringop.h"
|
||||
|
||||
static int cmp_id(const void *item, const void *cmp_to) {
|
||||
return strcmp(item, cmp_to);
|
||||
}
|
||||
|
||||
static bool dir_exists(char *path) {
|
||||
struct stat sb;
|
||||
return stat(path, &sb) == 0 && S_ISDIR(sb.st_mode);
|
||||
|
|
@ -78,35 +82,37 @@ static void destroy_theme(struct icon_theme *theme) {
|
|||
free(theme);
|
||||
}
|
||||
|
||||
static int cmp_group(const void *item, const void *cmp_to) {
|
||||
return strcmp(item, cmp_to);
|
||||
}
|
||||
|
||||
static bool validate_icon_theme(struct icon_theme *theme) {
|
||||
return theme && theme->name && theme->comment && theme->directories;
|
||||
}
|
||||
|
||||
static bool group_handler(char *old_group, char *new_group,
|
||||
static const char *group_handler(char *old_group, char *new_group,
|
||||
struct icon_theme *theme) {
|
||||
if (!old_group) { // first group must be "Icon Theme"
|
||||
if (!new_group) {
|
||||
return true;
|
||||
}
|
||||
return strcmp(new_group, "Icon Theme") != 0;
|
||||
if (!old_group) {
|
||||
return new_group && strcmp(new_group, "Icon Theme") == 0 ? NULL :
|
||||
"first group must be 'Icon Theme'";
|
||||
}
|
||||
|
||||
if (strcmp(old_group, "Icon Theme") == 0) {
|
||||
if (!validate_icon_theme(theme)) {
|
||||
return true;
|
||||
if (!theme->name) {
|
||||
return "missing required key 'Name'";
|
||||
} else if (!theme->comment) {
|
||||
return "missing required key 'Comment'";
|
||||
} else if (!theme->directories) {
|
||||
return "missing required key 'Directories'";
|
||||
} else {
|
||||
for (char *c = theme->name; *c; ++c) {
|
||||
if (*c == ',' || *c == ' ') {
|
||||
return "malformed theme name";
|
||||
}
|
||||
}
|
||||
}
|
||||
} else {
|
||||
if (theme->subdirs->length == 0) { // skip
|
||||
return false;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
struct icon_theme_subdir *subdir =
|
||||
theme->subdirs->items[theme->subdirs->length - 1];
|
||||
if (!subdir->size) return true;
|
||||
if (!subdir->size) {
|
||||
return "missing required key 'Size'";
|
||||
}
|
||||
|
||||
switch (subdir->type) {
|
||||
case FIXED: subdir->max_size = subdir->min_size = subdir->size;
|
||||
|
|
@ -122,20 +128,20 @@ static bool group_handler(char *old_group, char *new_group,
|
|||
}
|
||||
}
|
||||
|
||||
if (new_group && list_seq_find(theme->directories, cmp_group, new_group) != -1) {
|
||||
if (new_group && list_seq_find(theme->directories, cmp_id, new_group) != -1) {
|
||||
struct icon_theme_subdir *subdir = calloc(1, sizeof(struct icon_theme_subdir));
|
||||
if (!subdir) {
|
||||
return true;
|
||||
return "out of memory";
|
||||
}
|
||||
subdir->name = strdup(new_group);
|
||||
subdir->threshold = 2;
|
||||
list_add(theme->subdirs, subdir);
|
||||
}
|
||||
|
||||
return false;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static int entry_handler(char *group, char *key, char *value,
|
||||
static const char *entry_handler(char *group, char *key, char *value,
|
||||
struct icon_theme *theme) {
|
||||
if (strcmp(group, "Icon Theme") == 0) {
|
||||
if (strcmp(key, "Name") == 0) {
|
||||
|
|
@ -149,20 +155,17 @@ static int entry_handler(char *group, char *key, char *value,
|
|||
} // Ignored: ScaledDirectories, Hidden, Example
|
||||
} else {
|
||||
if (theme->subdirs->length == 0) { // skip
|
||||
return false;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
struct icon_theme_subdir *subdir =
|
||||
theme->subdirs->items[theme->subdirs->length - 1];
|
||||
if (strcmp(subdir->name, group) != 0) { // skip
|
||||
return false;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
char *end;
|
||||
int n = strtol(value, &end, 10);
|
||||
if (strcmp(key, "Size") == 0) {
|
||||
subdir->size = n;
|
||||
return *end != '\0';
|
||||
if (strcmp(key, "Context") == 0) {
|
||||
return NULL; // ignored, but explicitly handled to not fail parsing
|
||||
} else if (strcmp(key, "Type") == 0) {
|
||||
if (strcmp(value, "Fixed") == 0) {
|
||||
subdir->type = FIXED;
|
||||
|
|
@ -171,20 +174,28 @@ static int entry_handler(char *group, char *key, char *value,
|
|||
} else if (strcmp(value, "Threshold") == 0) {
|
||||
subdir->type = THRESHOLD;
|
||||
} else {
|
||||
return true;
|
||||
return "invalid value - expected 'Fixed', 'Scalable' or 'Threshold'";
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
char *end;
|
||||
int n = strtol(value, &end, 10);
|
||||
if (*end != '\0') {
|
||||
return "invalid value - expected a number";
|
||||
}
|
||||
|
||||
if (strcmp(key, "Size") == 0) {
|
||||
subdir->size = n;
|
||||
} else if (strcmp(key, "MaxSize") == 0) {
|
||||
subdir->max_size = n;
|
||||
return *end != '\0';
|
||||
} else if (strcmp(key, "MinSize") == 0) {
|
||||
subdir->min_size = n;
|
||||
return *end != '\0';
|
||||
} else if (strcmp(key, "Threshold") == 0) {
|
||||
subdir->threshold = n;
|
||||
return *end != '\0';
|
||||
} // Ignored: Scale, Applications
|
||||
} // Ignored: Scale
|
||||
}
|
||||
return false;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
@ -215,12 +226,16 @@ static struct icon_theme *read_theme_file(char *basedir, char *theme_name) {
|
|||
}
|
||||
theme->subdirs = create_list();
|
||||
|
||||
bool error = false;
|
||||
char *group = NULL;
|
||||
list_t *groups = create_list();
|
||||
|
||||
const char *error = NULL;
|
||||
int line_no = 0;
|
||||
char *full_line = NULL;
|
||||
size_t full_len = 0;
|
||||
ssize_t nread;
|
||||
while ((nread = getline(&full_line, &full_len, theme_file)) != -1) {
|
||||
++line_no;
|
||||
|
||||
char *line = full_line - 1;
|
||||
while (isspace(*++line)) {} // remove leading whitespace
|
||||
if (!*line || line[0] == '#') continue; // ignore blank lines & comments
|
||||
|
|
@ -231,37 +246,42 @@ static struct icon_theme *read_theme_file(char *basedir, char *theme_name) {
|
|||
|
||||
if (line[0] == '[') { // group header
|
||||
// check well-formed
|
||||
if (line[--len] != ']') {
|
||||
error = true;
|
||||
break;
|
||||
}
|
||||
int i = 1;
|
||||
for (; !iscntrl(line[i]) && line[i] != '[' && line[i] != ']'; ++i) {}
|
||||
if (i < len) {
|
||||
error = true;
|
||||
if (i != --len || line[i] != ']') {
|
||||
error = "malformed group header";
|
||||
break;
|
||||
}
|
||||
|
||||
line[len] = '\0';
|
||||
|
||||
// check group is not duplicate
|
||||
if (list_seq_find(groups, cmp_id, &line[1]) != -1) {
|
||||
error = "duplicate group";
|
||||
break;
|
||||
}
|
||||
|
||||
// call handler
|
||||
line[len] = '\0';
|
||||
error = group_handler(group, &line[1], theme);
|
||||
char *last_group = groups->length > 0 ? groups->items[groups->length - 1] : NULL;
|
||||
error = group_handler(last_group, &line[1], theme);
|
||||
if (error) {
|
||||
break;
|
||||
}
|
||||
free(group);
|
||||
group = strdup(&line[1]);
|
||||
|
||||
list_add(groups, strdup(&line[1]));
|
||||
} else { // key-value pair
|
||||
if (!group) {
|
||||
error = true;
|
||||
if (groups->length == 0) {
|
||||
error = "unexpected content before first header";
|
||||
break;
|
||||
}
|
||||
|
||||
// check well-formed
|
||||
int eok = 0;
|
||||
for (; isalnum(line[eok]) || line[eok] == '-'; ++eok) {} // TODO locale?
|
||||
int i = eok - 1;
|
||||
while (isspace(line[++i])) {}
|
||||
if (line[i] != '=') {
|
||||
error = true;
|
||||
error = "malformed key-value pair";
|
||||
break;
|
||||
}
|
||||
|
||||
|
|
@ -269,30 +289,40 @@ static struct icon_theme *read_theme_file(char *basedir, char *theme_name) {
|
|||
char *value = &line[i];
|
||||
while (isspace(*++value)) {}
|
||||
// TODO unescape value
|
||||
error = entry_handler(group, line, value, theme);
|
||||
|
||||
error = entry_handler(groups->items[groups->length - 1], line,
|
||||
value, theme);
|
||||
if (error) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (!error && group) {
|
||||
error = group_handler(group, NULL, theme);
|
||||
}
|
||||
|
||||
free(group);
|
||||
free(full_line);
|
||||
fclose(theme_file);
|
||||
|
||||
if (!error && validate_icon_theme(theme)) {
|
||||
theme->dir = strdup(theme_name);
|
||||
return theme;
|
||||
if (!error) {
|
||||
if (groups->length > 0) {
|
||||
error = group_handler(groups->items[groups->length - 1], NULL, theme);
|
||||
} else {
|
||||
destroy_theme(theme);
|
||||
return NULL;
|
||||
error = "empty file";
|
||||
}
|
||||
}
|
||||
|
||||
if (!error) {
|
||||
theme->dir = strdup(theme_name);
|
||||
} else {
|
||||
char *last_group = groups->length > 0 ? groups->items[groups->length-1] : "n/a";
|
||||
sway_log(SWAY_DEBUG, "Failed to load theme '%s' - parsing of file "
|
||||
"'%s/%s/index.theme' failed on line %d (group '%s'): %s",
|
||||
theme_name, basedir, theme_name, line_no, last_group, error);
|
||||
destroy_theme(theme);
|
||||
theme = NULL;
|
||||
}
|
||||
|
||||
free(full_line);
|
||||
list_free_items_and_destroy(groups);
|
||||
fclose(theme_file);
|
||||
return theme;
|
||||
}
|
||||
|
||||
static list_t *load_themes_in_dir(char *basedir) {
|
||||
DIR *dir;
|
||||
if (!(dir = opendir(basedir))) {
|
||||
|
|
|
|||
Loading…
Reference in a new issue