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Replaced ad-hoc argument processing with getopt.

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This commit is contained in:
Camilla Berglund 2014-01-11 20:39:53 +01:00
parent 3f9117ef85
commit 457403586d
2 changed files with 32 additions and 32 deletions
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2
examples/CMakeLists.txt
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@ -41,7 +41,7 @@ else()
add_executable(boing WIN32 boing.c) add_executable(boing WIN32 boing.c)
add_executable(gears WIN32 gears.c) add_executable(gears WIN32 gears.c)
add_executable(heightmap WIN32 heightmap.c ${GETOPT}) add_executable(heightmap WIN32 heightmap.c ${GETOPT})
add_executable(particles WIN32 particles.c ${TINYCTHREAD}) add_executable(particles WIN32 particles.c ${TINYCTHREAD} ${GETOPT})
add_executable(simple WIN32 simple.c) add_executable(simple WIN32 simple.c)
add_executable(splitview WIN32 splitview.c) add_executable(splitview WIN32 splitview.c)
add_executable(wave WIN32 wave.c) add_executable(wave WIN32 wave.c)

60
examples/particles.c
View File

@ -46,6 +46,7 @@
#include <GLFW/glfw3.h> #include <GLFW/glfw3.h>
#include <tinycthread.h> #include <tinycthread.h>
#include <getopt.h>
// Define tokens for GL_EXT_separate_specular_color if not already defined // Define tokens for GL_EXT_separate_specular_color if not already defined
#ifndef GL_EXT_separate_specular_color #ifndef GL_EXT_separate_specular_color
@ -238,6 +239,24 @@ const GLfloat floor_shininess = 18.f;
const GLfloat fog_color[4] = { 0.1f, 0.1f, 0.1f, 1.f }; const GLfloat fog_color[4] = { 0.1f, 0.1f, 0.1f, 1.f };
//========================================================================
// Print usage information
//========================================================================
static void usage(void)
{
printf("Usage: particles [-hbs]\n");
printf("Options:\n");
printf(" -b Benchmark (run program for 60 seconds)\n");
printf(" -s Run program as single thread (default is to use two threads)\n");
printf(" -h Display this help\n");
printf("\n");
printf("Program runtime controls:\n");
printf(" W Toggle wireframe mode\n");
printf(" Esc Exit program\n");
}
//======================================================================== //========================================================================
// Initialize a new particle // Initialize a new particle
//======================================================================== //========================================================================
@ -940,7 +959,7 @@ static int physics_thread_main(void* arg)
int main(int argc, char** argv) int main(int argc, char** argv)
{ {
int i, frames, benchmark; int i, ch, frames, benchmark;
double t0, t; double t0, t;
thrd_t physics_thread = 0; thrd_t physics_thread = 0;
GLFWwindow* window; GLFWwindow* window;
@ -949,38 +968,19 @@ int main(int argc, char** argv)
multithreading = 1; multithreading = 1;
benchmark = 0; benchmark = 0;
for (i = 1; i < argc; i++) while ((ch = getopt(argc, argv, "bhs")) != -1)
{ {
// Use benchmarking? switch (ch)
if (strcmp(argv[i], "-b") == 0) {
case 'b':
benchmark = 1; benchmark = 1;
break;
// Force multithreading off? case 'h':
else if (strcmp(argv[i], "-s") == 0) usage();
exit(EXIT_SUCCESS);
case 's':
multithreading = 0; multithreading = 0;
break;
// With a Finder launch on Mac OS X we get a bogus -psn_0_46268417
// kind of argument (actual numbers vary). Ignore it.
else if (strncmp(argv[i], "-psn_", 5) == 0)
;
// Usage
else
{
if (strcmp(argv[i], "-?") != 0)
printf("Unknonwn option %s\n\n", argv[i]);
printf("Usage: %s [options]\n", argv[0]);
printf("\n");
printf("Options:\n");
printf(" -b Benchmark (run program for 60 s)\n");
printf(" -s Run program as single thread (default is to use two threads)\n");
printf(" -? Display this text\n");
printf("\n");
printf("Program runtime controls:\n");
printf(" w Toggle wireframe mode\n");
printf(" ESC Exit program\n");
exit(EXIT_FAILURE);
} }
} }