--- lbbs/src/lml.c 2025/06/03 00:57:27 1.3 +++ lbbs/src/lml.c 2025/10/03 09:46:28 1.16 @@ -14,9 +14,9 @@ * * ***************************************************************************/ +#include "common.h" #include "lml.h" #include "log.h" -#include "common.h" #include #include #include @@ -62,39 +62,77 @@ static int lml_tag_color_filter(const ch return 0; } -const static char *LML_tag_def[][3] = { - {"left", "[", ""}, - {"right", "]", NULL}, - {"bold", "\033[1m", ""}, - {"/bold", "\033[21m", NULL}, - {"b", "\033[1m", ""}, - {"/b", "\033[21m", NULL}, - {"italic", "\033[3m", ""}, - {"/italic", "\033[23m", NULL}, - {"i", "\033[3m", ""}, - {"/i", "\033[23m", NULL}, - {"underline", "\033[4m", ""}, - {"/underline", "\033[24m", NULL}, - {"u", "\033[4m", ""}, - {"/u", "\033[24m", NULL}, - {"color", NULL, (const char *)lml_tag_color_filter}, - {"/color", "\033[m", NULL}, - {"url", "", ""}, - {"/url", "(链接: %s)", NULL}, +#define LML_TAG_QUOTE_MAX_LEVEL 10 +#define LML_TAG_QUOTE_LEVEL_LOOP 3 + +static const char *lml_tag_quote_color[] = { + "\033[33m", // yellow + "\033[32m", // green + "\033[35m", // magenta +}; + +static int lml_tag_quote_level = 0; + +static int lml_tag_quote_filter(const char *tag_name, const char *tag_param_buf, char *tag_output_buf, size_t tag_output_buf_len) +{ + if (strcasecmp(tag_name, "quote") == 0) + { + if (lml_tag_quote_level <= LML_TAG_QUOTE_MAX_LEVEL) + { + lml_tag_quote_level++; + } + return snprintf(tag_output_buf, tag_output_buf_len, "%s", + lml_tag_quote_color[lml_tag_quote_level % LML_TAG_QUOTE_LEVEL_LOOP]); + } + else if (strcasecmp(tag_name, "/quote") == 0) + { + if (lml_tag_quote_level > 0) + { + lml_tag_quote_level--; + } + return snprintf(tag_output_buf, tag_output_buf_len, "%s", + (lml_tag_quote_level > 0 ? lml_tag_quote_color[lml_tag_quote_level % LML_TAG_QUOTE_LEVEL_LOOP] : "\033[m")); + } + + return 0; +} + +const static char *LML_tag_def[][4] = { + // Definition of tuple: {lml_tag, lml_output, default_param | lml_filter_cb, no_lml_output} + {"left", "[", "", "[left]"}, + {"right", "]", "", "[right]"}, + {"bold", "\033[1m", "", ""}, // does not work in Fterm + {"/bold", "\033[22m", NULL, ""}, + {"b", "\033[1m", "", ""}, + {"/b", "\033[22m", NULL, ""}, + {"italic", "\033[5m", "", ""}, // use blink instead + {"/italic", "\033[m", NULL, ""}, // \033[25m does not work in Fterm + {"i", "\033[5m", "", ""}, + {"/i", "\033[m", NULL, ""}, + {"underline", "\033[4m", "", ""}, + {"/underline", "\033[m", NULL, ""}, // \033[24m does not work in Fterm + {"u", "\033[4m", "", ""}, + {"/u", "\033[m", NULL, ""}, + {"color", NULL, (const char *)lml_tag_color_filter, ""}, + {"/color", "\033[m", NULL, ""}, + {"quote", NULL, (const char *)lml_tag_quote_filter, ""}, + {"/quote", NULL, (const char *)lml_tag_quote_filter, ""}, + {"url", "", "", ""}, + {"/url", "(閾炬帴: %s)", NULL, ""}, {"link", "", ""}, - {"/link", "(链接: %s)", NULL}, + {"/link", "(閾炬帴: %s)", NULL, ""}, {"email", "", ""}, - {"/email", "(Email: %s)", NULL}, + {"/email", "(Email: %s)", NULL, ""}, {"user", "", ""}, - {"/user", "(用户: %s)", NULL}, + {"/user", "(鐢ㄦ埛: %s)", NULL, ""}, {"article", "", ""}, - {"/article", "(文章: %s)", NULL}, - {"image", "(图片: %s)", ""}, - {"flash", "(Flash: %s)", ""}, - {"bwf", "\033[1;31m****\033[m", ""}, + {"/article", "(鏂囩珷: %s)", NULL, ""}, + {"image", "(鍥剧墖: %s)", "", "%s"}, + {"flash", "(Flash: %s)", "", ""}, + {"bwf", "\033[1;31m****\033[m", "", "****"}, }; -#define LML_TAG_COUNT 29 +#define LML_TAG_COUNT 31 static int LML_tag_name_len[LML_TAG_COUNT]; static int LML_init = 0; @@ -114,8 +152,9 @@ inline static void lml_init(void) } } -int lml_plain(const char *str_in, char *str_out, int buf_len) +int lml_plain(const char *str_in, char *str_out, int buf_len, int lml_tag) { + char c; char tag_param_buf[LML_TAG_PARAM_BUF_LEN]; char tag_output_buf[LML_TAG_OUTPUT_BUF_LEN]; int i; @@ -125,11 +164,93 @@ int lml_plain(const char *str_in, char * int tag_end_pos = -1; int tag_param_pos = -1; int tag_output_len; + int new_line = 1; + int fb_quote_level = 0; lml_init(); + lml_tag_quote_level = 0; + for (i = 0; str_in[i] != '\0'; i++) { + if (lml_tag && new_line) + { + if (fb_quote_level > 0) + { + lml_tag_quote_level -= fb_quote_level; + + tag_output_len = snprintf(tag_output_buf, LML_TAG_OUTPUT_BUF_LEN, "%s", + (lml_tag_quote_level > 0 ? lml_tag_quote_color[lml_tag_quote_level % LML_TAG_QUOTE_LEVEL_LOOP] : "\033[m")); + if (j + tag_output_len >= buf_len) + { + log_error("Buffer is not longer enough for output string %d >= %d\n", j + tag_output_len, buf_len); + str_out[j] = '\0'; + return j; + } + memcpy(str_out + j, tag_output_buf, (size_t)tag_output_len); + j += tag_output_len; + + fb_quote_level = 0; + } + + while (str_in[i + fb_quote_level * 2] == ':' && str_in[i + fb_quote_level * 2 + 1] == ' ') // FB2000 quote leading str + { + fb_quote_level++; + } + + if (fb_quote_level > 0) + { + lml_tag_quote_level += fb_quote_level; + + tag_output_len = snprintf(tag_output_buf, LML_TAG_OUTPUT_BUF_LEN, "%s", + lml_tag_quote_color[(lml_tag_quote_level) % LML_TAG_QUOTE_LEVEL_LOOP]); + if (j + tag_output_len >= buf_len) + { + log_error("Buffer is not longer enough for output string %d >= %d\n", j + tag_output_len, buf_len); + str_out[j] = '\0'; + return j; + } + memcpy(str_out + j, tag_output_buf, (size_t)tag_output_len); + j += tag_output_len; + } + + new_line = 0; + } + + if (str_in[i] == '\033' && str_in[i + 1] == '[') // Escape sequence -- copy directly + { + for (k = i + 2; str_in[k] != '\0' && str_in[k] != 'm'; k++) + ; + + if (str_in[k] == 'm') // Valid + { + if (j + (k - i + 1) >= buf_len) + { + log_error("Buffer is not longer enough for output string %d >= %d\n", j + (k - i + 1), buf_len); + str_out[j] = '\0'; + return j; + } + memcpy(str_out + j, str_in + i, (size_t)(k - i + 1)); + j += (k - i + 1); + i = k; + continue; + } + else // reach end of string + { + break; + } + } + + if (str_in[i] == '\n') + { + tag_start_pos = -1; // jump out of tag at end of line + new_line = 1; + } + else if (str_in[i] == '\r') + { + continue; // ignore '\r' + } + if (str_in[i] == '[') { tag_start_pos = i + 1; @@ -167,18 +288,32 @@ int lml_plain(const char *str_in, char * strncpy(tag_param_buf, LML_tag_def[k][2], LML_TAG_PARAM_BUF_LEN - 1); tag_param_buf[LML_TAG_PARAM_BUF_LEN - 1] = '\0'; } - if (LML_tag_def[k][1] != NULL) + if (lml_tag) { - tag_output_len = snprintf(tag_output_buf, LML_TAG_OUTPUT_BUF_LEN, LML_tag_def[k][1], tag_param_buf); + if (LML_tag_def[k][1] != NULL) + { + tag_output_len = snprintf(tag_output_buf, LML_TAG_OUTPUT_BUF_LEN, LML_tag_def[k][1], tag_param_buf); + } + else + { + tag_output_len = ((lml_tag_filter_cb)LML_tag_def[k][2])( + LML_tag_def[k][0], tag_param_buf, tag_output_buf, LML_TAG_OUTPUT_BUF_LEN); + } } else { - tag_output_len = ((lml_tag_filter_cb)LML_tag_def[k][2])( - LML_tag_def[k][0], tag_param_buf, tag_output_buf, LML_TAG_OUTPUT_BUF_LEN); + if (LML_tag_def[k][3] != NULL) + { + tag_output_len = snprintf(tag_output_buf, LML_TAG_OUTPUT_BUF_LEN, LML_tag_def[k][3], tag_param_buf); + } + else + { + tag_output_len = 0; + } } - if (j + tag_output_len >= buf_len - 1) + if (j + tag_output_len >= buf_len) { - log_error("Buffer is not longer enough for output string %d >= %d\n", j + tag_output_len, buf_len - 1); + log_error("Buffer is not longer enough for output string %d >= %d\n", j + tag_output_len, buf_len); str_out[j] = '\0'; return j; } @@ -197,25 +332,31 @@ int lml_plain(const char *str_in, char * } else if (tag_start_pos == -1) // not in LML tag { - if (str_in[i] < 0 || str_in[i] > 127) // GBK chinese character + if (str_in[i] & 0b10000000) // head of multi-byte character { - if (j + 2 >= buf_len - 1) + if (j + 4 >= buf_len) // Assuming UTF-8 CJK characters use 4 bytes, though most of them actually use 3 bytes { - log_error("Buffer is not longer enough for output string %ld >= %d\n", j + 2, buf_len - 1); + log_error("Buffer is not longer enough for output string %ld >= %d\n", j + 4, buf_len); str_out[j] = '\0'; return j; } - str_out[j++] = str_in[i++]; - if (str_in[i] == '\0') + + c = (str_in[i] & 0b01110000) << 1; + while (c & 0b10000000) { - str_out[j] = '\0'; - return j; + str_out[j++] = str_in[i++]; + if (str_in[i] == '\0') + { + str_out[j] = '\0'; + return j; + } + c = (c & 0b01111111) << 1; } } - if (j + 1 >= buf_len - 1) + if (j + 1 >= buf_len) { - log_error("Buffer is not longer enough for output string %ld >= %d\n", j + 1, buf_len - 1); + log_error("Buffer is not longer enough for output string %ld >= %d\n", j + 1, buf_len); str_out[j] = '\0'; return j; } @@ -227,7 +368,20 @@ int lml_plain(const char *str_in, char * } } + if (lml_tag && lml_tag_quote_level > 0) + { + tag_output_len = snprintf(tag_output_buf, LML_TAG_OUTPUT_BUF_LEN, "\033[m"); + if (j + tag_output_len >= buf_len) + { + log_error("Buffer is not longer enough for output string %d >= %d\n", j + tag_output_len, buf_len); + str_out[j] = '\0'; + return j; + } + memcpy(str_out + j, tag_output_buf, (size_t)tag_output_len); + j += tag_output_len; + } + str_out[j] = '\0'; return j; -} \ No newline at end of file +}