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/*
* BRLTTY - A background process providing access to the console screen (when in
* text mode) for a blind person using a refreshable braille display.
*
* Copyright (C) 1995-2024 by The BRLTTY Developers.
*
* BRLTTY comes with ABSOLUTELY NO WARRANTY.
*
* This is free software, placed under the terms of the
* GNU Lesser General Public License, as published by the Free Software
* Foundation; either version 2.1 of the License, or (at your option) any
* later version. Please see the file LICENSE-LGPL for details.
*
* Web Page: http://brltty.app/
*
* This software is maintained by Dave Mielke <dave@mielke.cc>.
*/
#include "prologue.h"
#include "log.h"
#include "profile.h"
#include "datafile.h"
#include "file.h"
#include "utf8.h"
typedef struct {
const ProfileDescriptor *profile;
char **values;
} ProfileActivationData;
static int
processPropertyAssignment (
DataFile *file,
const DataString *name,
char **value,
const ProfileActivationData *pad
) {
unsigned int index;
for (index=0; index<pad->profile->properties.count; index+=1) {
if (isKeyword(pad->profile->properties.array[index].name, name->characters, name->length)) {
char **v = &pad->values[index];
if (*v) {
reportDataError(file, "property assigned more than once: %s:%.*"PRIws,
pad->profile->category, name->length, name->characters);
free(*v);
}
*v = *value;
*value = NULL;
return 1;
}
}
reportDataError(file, "unknown property: %s:%.*"PRIws,
pad->profile->category, name->length, name->characters);
return 1;
}
static DATA_OPERANDS_PROCESSOR(processPropertyOperands) {
const ProfileActivationData *pad = data;
int ok = 1;
DataString name;
if (getDataString(file, &name, 0, "property name")) {
DataString value;
if (getDataString(file, &value, 0, "property value")) {
char *v = getUtf8FromWchars(value.characters, value.length, NULL);
if (v) {
if (!processPropertyAssignment(file, &name, &v, pad)) ok = 0;
if (v) free(v);
} else {
ok = 0;
}
}
}
return ok;
}
static DATA_OPERANDS_PROCESSOR(processProfileOperands) {
BEGIN_DATA_DIRECTIVE_TABLE
DATA_NESTING_DIRECTIVES,
DATA_VARIABLE_DIRECTIVES,
DATA_CONDITION_DIRECTIVES,
{.name=NULL, .processor=processPropertyOperands},
END_DATA_DIRECTIVE_TABLE
return processDirectiveOperand(file, &directives, "profile directive", data);
}
char *
makeProfilePath (const ProfileDescriptor *profile, const char *directory, const char *name) {
char *subdirectory = makePath(directory, PROFILES_SUBDIRECTORY);
if (subdirectory) {
char *file = makeFilePath(subdirectory, name, profile->extension);
free(subdirectory);
if (file) return file;
}
return NULL;
}
static int
changeProperty (const ProfileProperty *property, const char *value) {
if (property->change) {
if (!value) value = *property->defaultValue;
if (property->change(value)) {
return 1;
}
}
return 0;
}
static int
changeProperties (const ProfileDescriptor *profile, char **values) {
int ok = !profile->begin || profile->begin();
if (ok) {
const ProfileProperty *const start = profile->properties.array;
const ProfileProperty *const end = start + profile->properties.count;
const ProfileProperty *property = start;
while (property < end) {
char *value = values? values[property - start]: NULL;
if (!changeProperty(property, value)) ok = 0;
if (value) free(value);
property += 1;
}
if (profile->end && !profile->end()) ok = 0;
}
return ok;
}
int
activateProfile (const ProfileDescriptor *profile, const char *directory, const char *name) {
int ok = 0;
if (setBaseDataVariables(NULL)) {
char *path;
if ((path = makeProfilePath(profile, directory, name))) {
ProfileActivationData pad = {
.profile = profile
};
if ((pad.values = malloc(ARRAY_SIZE(pad.values, profile->properties.count)))) {
for (unsigned int index=0; index<profile->properties.count; index+=1) {
pad.values[index] = NULL;
}
const DataFileParameters parameters = {
.processOperands = processProfileOperands,
.data = &pad
};
if (processDataFile(path, ¶meters)) {
if (changeProperties(profile, pad.values)) {
ok = 1;
}
}
free(pad.values);
} else {
logMallocError();
}
free(path);
}
}
return ok;
}
int
deactivateProfile (const ProfileDescriptor *profile) {
return changeProperties(profile, NULL);
}
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