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/**
* \file unload.c
* \brief Unload project objects from the scripting environment.
* \author Copyright (c) 2002-2008 Jason Perkins and the Premake project
*/
#include <assert.h>
#include "premake.h"
#include "script/script_internal.h"
static int unload_blocks(lua_State* L, struct UnloadFuncs* funcs, Blocks blocks);
static int unload_projects(lua_State* L, struct UnloadFuncs* funcs, Solution sln);
/**
* Copy project information out of the scripting environment and into C objects that
* can be more easily manipulated by the action code.
* \param L The Lua scripting engine state.
* \param sess The session will contain the unloaded objects.
* \param funcs The unloading "interface", providing an opportunity to mock for automated testing.
* \returns OKAY if successful.
*/
int unload_all(lua_State* L, Session sess, struct UnloadFuncs* funcs)
{
int si, sn, z = OKAY;
assert(L);
assert(sess);
assert(funcs);
assert(funcs->unload_solution);
assert(funcs->unload_project);
assert(funcs->unload_block);
/* iterate over the list of solutions */
lua_getglobal(L, SOLUTIONS_KEY);
sn = luaL_getn(L, -1);
for (si = 1; z == OKAY && si <= sn; ++si)
{
/* add a new solution to the master list */
Solution sln = solution_create();
session_add_solution(sess, sln);
/* get the scripted solution object from the solutions list */
lua_rawgeti(L, -1, si);
/* unload the solution fields, then configuration blocks, then projects */
z = funcs->unload_solution(L, sln);
if (z == OKAY)
{
Blocks blocks = solution_get_blocks(sln);
z = unload_blocks(L, funcs, blocks);
}
if (z == OKAY)
{
z = unload_projects(L, funcs, sln);
}
/* remove solution object from stack */
lua_pop(L, 1);
}
/* remove list of solutions from stack */
lua_pop(L, 1);
return z;
}
static int unload_projects(lua_State* L, struct UnloadFuncs* funcs, Solution sln)
{
int pi, pn, z = OKAY;
/* iterate over list of projects from the solution */
lua_getfield(L, -1, PROJECTS_KEY);
pn = luaL_getn(L, -1);
for (pi = 1; z == OKAY && pi <= pn; ++pi)
{
/* add a new project to the master list */
Project prj = project_create();
solution_add_project(sln, prj);
/* get the scripted project object from the solutions list */
lua_rawgeti(L, -1, pi);
/* unload the project fields, then configuration blocks */
z = funcs->unload_project(L, prj);
if (z == OKAY)
{
Blocks blocks = project_get_blocks(prj);
z = unload_blocks(L, funcs, blocks);
}
/* remove project object from stack */
lua_pop(L, 1);
}
/* remove list of projects from stack */
lua_pop(L, 1);
return z;
}
static int unload_blocks(lua_State* L, struct UnloadFuncs* funcs, Blocks blocks)
{
int ci, cn, z = OKAY;
/* iterate over the list configuration blocks from the solution */
lua_getfield(L, -1, BLOCKS_KEY);
cn = luaL_getn(L, -1);
for (ci = 1; z == OKAY && ci <= cn; ++ci)
{
Block blk = block_create();
blocks_add(blocks, blk);
/* unload the configuration block fields */
lua_rawgeti(L, -1, ci);
z = funcs->unload_block(L, blk);
/* remove the configuration block object from the stack */
lua_pop(L, 1);
}
/* remove the list of blocks from the stack */
lua_pop(L, 1);
return z;
}
int unload_fields(lua_State* L, Fields fields, struct FieldInfo* info)
{
const char* value;
int fi;
for (fi = 0; info[fi].name != NULL; ++fi)
{
Strings values = strings_create();
lua_getfield(L, -1, info[fi].name);
if (lua_istable(L, -1))
{
int i, n;
n = luaL_getn(L, -1);
for (i = 1; i <= n; ++i)
{
lua_rawgeti(L, -1, i);
value = lua_tostring(L, -1);
if (value != NULL)
{
strings_add(values, value);
}
lua_pop(L, 1);
}
}
else
{
value = lua_tostring(L, -1);
if (value != NULL)
{
strings_add(values, value);
}
}
/* remove the field value from the top of the stack */
lua_pop(L, 1);
/* store the field values */
fields_set_values(fields, fi, values);
}
return OKAY;
}
/**
* Unload information from the scripting environment for a particular solution.
* \param L The Lua scripting engine state.
* \param sln The solution object to be populated.
* \returns OKAY if successful.
*/
int unload_solution(lua_State* L, Solution sln)
{
return unload_fields(L, solution_get_fields(sln), SolutionFieldInfo);
}
/**
* Unload information from the scripting environment for a particular project.
* \param L The Lua scripting engine state.
* \param prj The project object to be populated.
* \returns OKAY if successful.
*/
int unload_project(lua_State* L, Project prj)
{
return unload_fields(L, project_get_fields(prj), ProjectFieldInfo);
}
/**
* Unload information from the scripting environment for a particular configuration.
* \param L The Lua scripting engine state.
* \param blk The configuration block to be populated.
* \returns OKAY if successful.
*/
int unload_block(lua_State* L, Block blk)
{
return unload_fields(L, block_get_fields(blk), BlockFieldInfo);
}
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