diff options
Diffstat (limited to 'src/libs/3rdparty/libvterm/src/vterm.c')
| -rw-r--r-- | src/libs/3rdparty/libvterm/src/vterm.c | 430 |
1 files changed, 430 insertions, 0 deletions
diff --git a/src/libs/3rdparty/libvterm/src/vterm.c b/src/libs/3rdparty/libvterm/src/vterm.c new file mode 100644 index 0000000000..e1f676f5b6 --- /dev/null +++ b/src/libs/3rdparty/libvterm/src/vterm.c @@ -0,0 +1,430 @@ +#include "vterm_internal.h" + +#include <stdio.h> +#include <stdlib.h> +#include <stdarg.h> +#include <string.h> + +/***************** + * API functions * + *****************/ + +static void *default_malloc(size_t size, void *allocdata) +{ + void *ptr = malloc(size); + if(ptr) + memset(ptr, 0, size); + return ptr; +} + +static void default_free(void *ptr, void *allocdata) +{ + free(ptr); +} + +static VTermAllocatorFunctions default_allocator = { + .malloc = &default_malloc, + .free = &default_free, +}; + +VTerm *vterm_new(int rows, int cols) +{ + return vterm_build(&(const struct VTermBuilder){ + .rows = rows, + .cols = cols, + }); +} + +VTerm *vterm_new_with_allocator(int rows, int cols, VTermAllocatorFunctions *funcs, void *allocdata) +{ + return vterm_build(&(const struct VTermBuilder){ + .rows = rows, + .cols = cols, + .allocator = funcs, + .allocdata = allocdata, + }); +} + +/* A handy macro for defaulting values out of builder fields */ +#define DEFAULT(v, def) ((v) ? (v) : (def)) + +VTerm *vterm_build(const struct VTermBuilder *builder) +{ + const VTermAllocatorFunctions *allocator = DEFAULT(builder->allocator, &default_allocator); + + /* Need to bootstrap using the allocator function directly */ + VTerm *vt = (*allocator->malloc)(sizeof(VTerm), builder->allocdata); + + vt->allocator = allocator; + vt->allocdata = builder->allocdata; + + vt->rows = builder->rows; + vt->cols = builder->cols; + + vt->parser.state = NORMAL; + + vt->parser.callbacks = NULL; + vt->parser.cbdata = NULL; + + vt->parser.emit_nul = false; + + vt->outfunc = NULL; + vt->outdata = NULL; + + vt->outbuffer_len = DEFAULT(builder->outbuffer_len, 4096); + vt->outbuffer_cur = 0; + vt->outbuffer = vterm_allocator_malloc(vt, vt->outbuffer_len); + + vt->tmpbuffer_len = DEFAULT(builder->tmpbuffer_len, 4096); + vt->tmpbuffer = vterm_allocator_malloc(vt, vt->tmpbuffer_len); + + return vt; +} + +void vterm_free(VTerm *vt) +{ + if(vt->screen) + vterm_screen_free(vt->screen); + + if(vt->state) + vterm_state_free(vt->state); + + vterm_allocator_free(vt, vt->outbuffer); + vterm_allocator_free(vt, vt->tmpbuffer); + + vterm_allocator_free(vt, vt); +} + +INTERNAL void *vterm_allocator_malloc(VTerm *vt, size_t size) +{ + return (*vt->allocator->malloc)(size, vt->allocdata); +} + +INTERNAL void vterm_allocator_free(VTerm *vt, void *ptr) +{ + (*vt->allocator->free)(ptr, vt->allocdata); +} + +void vterm_get_size(const VTerm *vt, int *rowsp, int *colsp) +{ + if(rowsp) + *rowsp = vt->rows; + if(colsp) + *colsp = vt->cols; +} + +void vterm_set_size(VTerm *vt, int rows, int cols) +{ + if(rows < 1 || cols < 1) + return; + + vt->rows = rows; + vt->cols = cols; + + if(vt->parser.callbacks && vt->parser.callbacks->resize) + (*vt->parser.callbacks->resize)(rows, cols, vt->parser.cbdata); +} + +int vterm_get_utf8(const VTerm *vt) +{ + return vt->mode.utf8; +} + +void vterm_set_utf8(VTerm *vt, int is_utf8) +{ + vt->mode.utf8 = is_utf8; +} + +void vterm_output_set_callback(VTerm *vt, VTermOutputCallback *func, void *user) +{ + vt->outfunc = func; + vt->outdata = user; +} + +INTERNAL void vterm_push_output_bytes(VTerm *vt, const char *bytes, size_t len) +{ + if(vt->outfunc) { + (vt->outfunc)(bytes, len, vt->outdata); + return; + } + + if(len > vt->outbuffer_len - vt->outbuffer_cur) + return; + + memcpy(vt->outbuffer + vt->outbuffer_cur, bytes, len); + vt->outbuffer_cur += len; +} + +INTERNAL void vterm_push_output_vsprintf(VTerm *vt, const char *format, va_list args) +{ + size_t len = vsnprintf(vt->tmpbuffer, vt->tmpbuffer_len, + format, args); + + vterm_push_output_bytes(vt, vt->tmpbuffer, len); +} + +INTERNAL void vterm_push_output_sprintf(VTerm *vt, const char *format, ...) +{ + va_list args; + va_start(args, format); + vterm_push_output_vsprintf(vt, format, args); + va_end(args); +} + +INTERNAL void vterm_push_output_sprintf_ctrl(VTerm *vt, unsigned char ctrl, const char *fmt, ...) +{ + size_t cur; + + if(ctrl >= 0x80 && !vt->mode.ctrl8bit) + cur = snprintf(vt->tmpbuffer, vt->tmpbuffer_len, + ESC_S "%c", ctrl - 0x40); + else + cur = snprintf(vt->tmpbuffer, vt->tmpbuffer_len, + "%c", ctrl); + + if(cur >= vt->tmpbuffer_len) + return; + + va_list args; + va_start(args, fmt); + cur += vsnprintf(vt->tmpbuffer + cur, vt->tmpbuffer_len - cur, + fmt, args); + va_end(args); + + if(cur >= vt->tmpbuffer_len) + return; + + vterm_push_output_bytes(vt, vt->tmpbuffer, cur); +} + +INTERNAL void vterm_push_output_sprintf_str(VTerm *vt, unsigned char ctrl, bool term, const char *fmt, ...) +{ + size_t cur = 0; + + if(ctrl) { + if(ctrl >= 0x80 && !vt->mode.ctrl8bit) + cur = snprintf(vt->tmpbuffer, vt->tmpbuffer_len, + ESC_S "%c", ctrl - 0x40); + else + cur = snprintf(vt->tmpbuffer, vt->tmpbuffer_len, + "%c", ctrl); + + if(cur >= vt->tmpbuffer_len) + return; + } + + va_list args; + va_start(args, fmt); + cur += vsnprintf(vt->tmpbuffer + cur, vt->tmpbuffer_len - cur, + fmt, args); + va_end(args); + + if(cur >= vt->tmpbuffer_len) + return; + + if(term) { + cur += snprintf(vt->tmpbuffer + cur, vt->tmpbuffer_len - cur, + vt->mode.ctrl8bit ? "\x9C" : ESC_S "\\"); // ST + + if(cur >= vt->tmpbuffer_len) + return; + } + + vterm_push_output_bytes(vt, vt->tmpbuffer, cur); +} + +size_t vterm_output_get_buffer_size(const VTerm *vt) +{ + return vt->outbuffer_len; +} + +size_t vterm_output_get_buffer_current(const VTerm *vt) +{ + return vt->outbuffer_cur; +} + +size_t vterm_output_get_buffer_remaining(const VTerm *vt) +{ + return vt->outbuffer_len - vt->outbuffer_cur; +} + +size_t vterm_output_read(VTerm *vt, char *buffer, size_t len) +{ + if(len > vt->outbuffer_cur) + len = vt->outbuffer_cur; + + memcpy(buffer, vt->outbuffer, len); + + if(len < vt->outbuffer_cur) + memmove(vt->outbuffer, vt->outbuffer + len, vt->outbuffer_cur - len); + + vt->outbuffer_cur -= len; + + return len; +} + +VTermValueType vterm_get_attr_type(VTermAttr attr) +{ + switch(attr) { + case VTERM_ATTR_BOLD: return VTERM_VALUETYPE_BOOL; + case VTERM_ATTR_UNDERLINE: return VTERM_VALUETYPE_INT; + case VTERM_ATTR_ITALIC: return VTERM_VALUETYPE_BOOL; + case VTERM_ATTR_BLINK: return VTERM_VALUETYPE_BOOL; + case VTERM_ATTR_REVERSE: return VTERM_VALUETYPE_BOOL; + case VTERM_ATTR_CONCEAL: return VTERM_VALUETYPE_BOOL; + case VTERM_ATTR_STRIKE: return VTERM_VALUETYPE_BOOL; + case VTERM_ATTR_FONT: return VTERM_VALUETYPE_INT; + case VTERM_ATTR_FOREGROUND: return VTERM_VALUETYPE_COLOR; + case VTERM_ATTR_BACKGROUND: return VTERM_VALUETYPE_COLOR; + case VTERM_ATTR_SMALL: return VTERM_VALUETYPE_BOOL; + case VTERM_ATTR_BASELINE: return VTERM_VALUETYPE_INT; + + case VTERM_N_ATTRS: return 0; + } + return 0; /* UNREACHABLE */ +} + +VTermValueType vterm_get_prop_type(VTermProp prop) +{ + switch(prop) { + case VTERM_PROP_CURSORVISIBLE: return VTERM_VALUETYPE_BOOL; + case VTERM_PROP_CURSORBLINK: return VTERM_VALUETYPE_BOOL; + case VTERM_PROP_ALTSCREEN: return VTERM_VALUETYPE_BOOL; + case VTERM_PROP_TITLE: return VTERM_VALUETYPE_STRING; + case VTERM_PROP_ICONNAME: return VTERM_VALUETYPE_STRING; + case VTERM_PROP_REVERSE: return VTERM_VALUETYPE_BOOL; + case VTERM_PROP_CURSORSHAPE: return VTERM_VALUETYPE_INT; + case VTERM_PROP_MOUSE: return VTERM_VALUETYPE_INT; + case VTERM_PROP_FOCUSREPORT: return VTERM_VALUETYPE_BOOL; + + case VTERM_N_PROPS: return 0; + } + return 0; /* UNREACHABLE */ +} + +void vterm_scroll_rect(VTermRect rect, + int downward, + int rightward, + int (*moverect)(VTermRect src, VTermRect dest, void *user), + int (*eraserect)(VTermRect rect, int selective, void *user), + void *user) +{ + VTermRect src; + VTermRect dest; + + if(abs(downward) >= rect.end_row - rect.start_row || + abs(rightward) >= rect.end_col - rect.start_col) { + /* Scroll more than area; just erase the lot */ + (*eraserect)(rect, 0, user); + return; + } + + if(rightward >= 0) { + /* rect: [XXX................] + * src: [----------------] + * dest: [----------------] + */ + dest.start_col = rect.start_col; + dest.end_col = rect.end_col - rightward; + src.start_col = rect.start_col + rightward; + src.end_col = rect.end_col; + } + else { + /* rect: [................XXX] + * src: [----------------] + * dest: [----------------] + */ + int leftward = -rightward; + dest.start_col = rect.start_col + leftward; + dest.end_col = rect.end_col; + src.start_col = rect.start_col; + src.end_col = rect.end_col - leftward; + } + + if(downward >= 0) { + dest.start_row = rect.start_row; + dest.end_row = rect.end_row - downward; + src.start_row = rect.start_row + downward; + src.end_row = rect.end_row; + } + else { + int upward = -downward; + dest.start_row = rect.start_row + upward; + dest.end_row = rect.end_row; + src.start_row = rect.start_row; + src.end_row = rect.end_row - upward; + } + + if(moverect) + (*moverect)(dest, src, user); + + if(downward > 0) + rect.start_row = rect.end_row - downward; + else if(downward < 0) + rect.end_row = rect.start_row - downward; + + if(rightward > 0) + rect.start_col = rect.end_col - rightward; + else if(rightward < 0) + rect.end_col = rect.start_col - rightward; + + (*eraserect)(rect, 0, user); +} + +void vterm_copy_cells(VTermRect dest, + VTermRect src, + void (*copycell)(VTermPos dest, VTermPos src, void *user), + void *user) +{ + int downward = src.start_row - dest.start_row; + int rightward = src.start_col - dest.start_col; + + int init_row, test_row, init_col, test_col; + int inc_row, inc_col; + + if(downward < 0) { + init_row = dest.end_row - 1; + test_row = dest.start_row - 1; + inc_row = -1; + } + else /* downward >= 0 */ { + init_row = dest.start_row; + test_row = dest.end_row; + inc_row = +1; + } + + if(rightward < 0) { + init_col = dest.end_col - 1; + test_col = dest.start_col - 1; + inc_col = -1; + } + else /* rightward >= 0 */ { + init_col = dest.start_col; + test_col = dest.end_col; + inc_col = +1; + } + + VTermPos pos; + for(pos.row = init_row; pos.row != test_row; pos.row += inc_row) + for(pos.col = init_col; pos.col != test_col; pos.col += inc_col) { + VTermPos srcpos = { pos.row + downward, pos.col + rightward }; + (*copycell)(pos, srcpos, user); + } +} + +void vterm_check_version(int major, int minor) +{ + if(major != VTERM_VERSION_MAJOR) { + fprintf(stderr, "libvterm major version mismatch; %d (wants) != %d (library)\n", + major, VTERM_VERSION_MAJOR); + exit(1); + } + + if(minor > VTERM_VERSION_MINOR) { + fprintf(stderr, "libvterm minor version mismatch; %d (wants) > %d (library)\n", + minor, VTERM_VERSION_MINOR); + exit(1); + } + + // Happy +} |