1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <string.h> 4 5 #include "../debug.h" 6 #include "helpline.h" 7 #include "ui.h" 8 #include "libslang.h" 9 10 void ui_helpline__pop(void) 11 { 12 } 13 14 char ui_helpline__current[512]; 15 16 void ui_helpline__push(const char *msg) 17 { 18 const size_t sz = sizeof(ui_helpline__current); 19 20 SLsmg_gotorc(SLtt_Screen_Rows - 1, 0); 21 SLsmg_set_color(0); 22 SLsmg_write_nstring((char *)msg, SLtt_Screen_Cols); 23 SLsmg_refresh(); 24 strncpy(ui_helpline__current, msg, sz)[sz - 1] = '\0'; 25 } 26 27 void ui_helpline__vpush(const char *fmt, va_list ap) 28 { 29 char *s; 30 31 if (vasprintf(&s, fmt, ap) < 0) 32 vfprintf(stderr, fmt, ap); 33 else { 34 ui_helpline__push(s); 35 free(s); 36 } 37 } 38 39 void ui_helpline__fpush(const char *fmt, ...) 40 { 41 va_list ap; 42 43 va_start(ap, fmt); 44 ui_helpline__vpush(fmt, ap); 45 va_end(ap); 46 } 47 48 void ui_helpline__puts(const char *msg) 49 { 50 ui_helpline__pop(); 51 ui_helpline__push(msg); 52 } 53 54 void ui_helpline__init(void) 55 { 56 ui_helpline__puts(" "); 57 } 58 59 char ui_helpline__last_msg[1024]; 60 61 int ui_helpline__show_help(const char *format, va_list ap) 62 { 63 int ret; 64 static int backlog; 65 66 pthread_mutex_lock(&ui__lock); 67 ret = vscnprintf(ui_helpline__last_msg + backlog, 68 sizeof(ui_helpline__last_msg) - backlog, format, ap); 69 backlog += ret; 70 71 if (ui_helpline__last_msg[backlog - 1] == '\n') { 72 ui_helpline__puts(ui_helpline__last_msg); 73 SLsmg_refresh(); 74 backlog = 0; 75 } 76 pthread_mutex_unlock(&ui__lock); 77 78 return ret; 79 } 80