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-rw-r--r--src/utils.c163
1 files changed, 163 insertions, 0 deletions
diff --git a/src/utils.c b/src/utils.c
new file mode 100644
index 0000000..f3e87d2
--- /dev/null
+++ b/src/utils.c
@@ -0,0 +1,163 @@
+#include <ctype.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if defined(__linux__) && !defined(__ANDROID__)
+const char *sys_signame[NSIG] = {
+ "zero", "HUP", "INT", "QUIT", "ILL", "TRAP", "ABRT", "UNUSED", "FPE", "KILL", "USR1",
+ "SEGV", "USR2", "PIPE", "ALRM", "TERM", "STKFLT", "CHLD", "CONT", "STOP", "TSTP", "TTIN",
+ "TTOU", "URG", "XCPU", "XFSZ", "VTALRM", "PROF", "WINCH", "IO", "PWR", "SYS", NULL};
+#endif
+
+#if defined(_WIN32) || defined(__CYGWIN__)
+#include <windows.h>
+#undef NSIG
+#define NSIG 33
+const char *sys_signame[NSIG] = {
+ "zero", "HUP", "INT", "QUIT", "ILL", "TRAP", "IOT", "EMT", "FPE", "KILL", "BUS",
+ "SEGV", "SYS", "PIPE", "ALRM", "TERM", "URG", "STOP", "TSTP", "CONT", "CHLD", "TTIN",
+ "TTOU", "IO", "XCPU", "XFSZ", "VTALRM", "PROF", "WINCH", "PWR", "USR1", "USR2", NULL};
+#endif
+
+void *xmalloc(size_t size) {
+ if (size == 0) return NULL;
+ void *p = malloc(size);
+ if (!p) abort();
+ return p;
+}
+
+void *xrealloc(void *p, size_t size) {
+ if ((size == 0) && (p == NULL)) return NULL;
+ p = realloc(p, size);
+ if (!p) abort();
+ return p;
+}
+
+char *uppercase(char *s) {
+ while(*s) {
+ *s = (char)toupper((int)*s);
+ s++;
+ }
+ return s;
+}
+
+char *lowercase(char *s) {
+ while(*s) {
+ *s = (char)tolower((int)*s);
+ s++;
+ }
+ return s;
+}
+
+bool endswith(const char *str, const char *suffix) {
+ size_t str_len = strlen(str);
+ size_t suffix_len = strlen(suffix);
+ return str_len > suffix_len && !strcmp(str + (str_len - suffix_len), suffix);
+}
+
+int get_sig_name(int sig, char *buf, size_t len) {
+ int n = snprintf(buf, len, "SIG%s", sig < NSIG ? sys_signame[sig] : "unknown");
+ uppercase(buf);
+ return n;
+}
+
+int get_sig(const char *sig_name) {
+ for (int sig = 1; sig < NSIG; sig++) {
+ const char *name = sys_signame[sig];
+ if (name != NULL && (strcasecmp(name, sig_name) == 0 || strcasecmp(name, sig_name + 3) == 0))
+ return sig;
+ }
+ return atoi(sig_name);
+}
+
+int open_uri(char *uri) {
+#ifdef __APPLE__
+ char command[256];
+ sprintf(command, "open %s > /dev/null 2>&1", uri);
+ return system(command);
+#elif defined(_WIN32) || defined(__CYGWIN__)
+ return ShellExecute(0, 0, uri, 0, 0, SW_SHOW) > (HINSTANCE)32 ? 0 : 1;
+#else
+ // check if X server is running
+ if (system("xset -q > /dev/null 2>&1")) return 1;
+ char command[256];
+ sprintf(command, "xdg-open %s > /dev/null 2>&1", uri);
+ return system(command);
+#endif
+}
+
+#ifdef _WIN32
+char *strsep(char **sp, char *sep) {
+ char *p, *s;
+ if (sp == NULL || *sp == NULL || **sp == '\0') return (NULL);
+ s = *sp;
+ p = s + strcspn(s, sep);
+ if (*p != '\0') *p++ = '\0';
+ *sp = p;
+ return s;
+}
+
+const char *quote_arg(const char *arg) {
+ int len = 0, n = 0;
+ int force_quotes = 0;
+ char *q, *d;
+ const char *p = arg;
+ if (!*p) force_quotes = 1;
+ while (*p) {
+ if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'')
+ force_quotes = 1;
+ else if (*p == '"')
+ n++;
+ else if (*p == '\\') {
+ int count = 0;
+ while (*p == '\\') {
+ count++;
+ p++;
+ len++;
+ }
+ if (*p == '"' || !*p) n += count * 2 + 1;
+ continue;
+ }
+ len++;
+ p++;
+ }
+ if (!force_quotes && n == 0) return arg;
+
+ d = q = xmalloc(len + n + 3);
+ *d++ = '"';
+ while (*arg) {
+ if (*arg == '"')
+ *d++ = '\\';
+ else if (*arg == '\\') {
+ int count = 0;
+ while (*arg == '\\') {
+ count++;
+ *d++ = *arg++;
+ }
+ if (*arg == '"' || !*arg) {
+ while (count-- > 0) *d++ = '\\';
+ if (!*arg) break;
+ *d++ = '\\';
+ }
+ }
+ *d++ = *arg++;
+ }
+ *d++ = '"';
+ *d++ = '\0';
+ return q;
+}
+
+void print_error(char *func) {
+ LPVOID buffer;
+ DWORD dw = GetLastError();
+ FormatMessage(
+ FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
+ NULL, dw, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&buffer, 0, NULL);
+ wprintf(L"== %s failed with error %d: %s", func, dw, buffer);
+ LocalFree(buffer);
+}
+#endif