--- lbbs/src/lml.c 2025/06/02 15:01:55 1.1 +++ lbbs/src/lml.c 2025/06/14 02:59:34 1.7 @@ -16,39 +16,122 @@ #include "lml.h" #include "log.h" +#include "common.h" #include #include #include -#define LML_TAG_PARAM_MAX_LEN 20 -#define LML_TAG_OUTPUT_BUF_LEN 256 +#define LML_TAG_PARAM_BUF_LEN 256 +#define LML_TAG_OUTPUT_BUF_LEN 1024 -#define LML_TAG_COUNT 21 +typedef int (*lml_tag_filter_cb)(const char *tag_name, const char *tag_param_buf, char *tag_output_buf, size_t tag_output_buf_len); -const static char *LML_tag_name[][2] = { - {"left", "["}, - {"right", "]"}, - {"underline", "\033[4m"}, - {"/underline", "\033[24m"}, - {"u", "\033[4m"}, - {"/u", "\033[24m"}, - {"url", ""}, - {"/url", "(链接: %s)"}, - {"link", ""}, - {"/link", "(链接: %s)"}, - {"email", ""}, - {"/email", "(Email: %s)"}, - {"user", ""}, - {"/user", "(用户: %s)"}, - {"article", ""}, - {"/article", "(文章: %s)"}, - {"hide", ""}, - {"/hide", ""}, - {"image", "(图片: %s)"}, - {"flash", "(Flash: %s)"}, - {"bwf", "\033[31m****\033[m"}, +static int lml_tag_color_filter(const char *tag_name, const char *tag_param_buf, char *tag_output_buf, size_t tag_output_buf_len) +{ + if (strcasecmp(tag_name, "color") == 0) + { + if (strcasecmp(tag_param_buf, "red") == 0) + { + return snprintf(tag_output_buf, tag_output_buf_len, "\033[1;31m"); + } + else if (strcasecmp(tag_param_buf, "green") == 0) + { + return snprintf(tag_output_buf, tag_output_buf_len, "\033[1;32m"); + } + else if (strcasecmp(tag_param_buf, "yellow") == 0) + { + return snprintf(tag_output_buf, tag_output_buf_len, "\033[1;33m"); + } + else if (strcasecmp(tag_param_buf, "blue") == 0) + { + return snprintf(tag_output_buf, tag_output_buf_len, "\033[1;34m"); + } + else if (strcasecmp(tag_param_buf, "magenta") == 0) + { + return snprintf(tag_output_buf, tag_output_buf_len, "\033[1;35m"); + } + else if (strcasecmp(tag_param_buf, "cyan") == 0) + { + return snprintf(tag_output_buf, tag_output_buf_len, "\033[1;36m"); + } + else if (strcasecmp(tag_param_buf, "black") == 0) + { + return snprintf(tag_output_buf, tag_output_buf_len, "\033[1;30;47m"); + } + } + return 0; +} + +#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, 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, + (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[][3] = { + {"left", "[", ""}, + {"right", "]", NULL}, + {"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", "(链接: %s)", NULL}, + {"link", "", ""}, + {"/link", "(链接: %s)", NULL}, + {"email", "", ""}, + {"/email", "(Email: %s)", NULL}, + {"user", "", ""}, + {"/user", "(用户: %s)", NULL}, + {"article", "", ""}, + {"/article", "(文章: %s)", NULL}, + {"image", "(图片: %s)", ""}, + {"flash", "(Flash: %s)", ""}, + {"bwf", "\033[1;31m****\033[m", ""}, +}; + +#define LML_TAG_COUNT 31 + static int LML_tag_name_len[LML_TAG_COUNT]; static int LML_init = 0; @@ -60,7 +143,7 @@ inline static void lml_init(void) { for (i = 0; i < LML_TAG_COUNT; i++) { - LML_tag_name_len[i] = (int)strlen(LML_tag_name[i][0]); + LML_tag_name_len[i] = (int)strlen(LML_tag_def[i][0]); } LML_init = 1; @@ -69,20 +152,78 @@ inline static void lml_init(void) int lml_plain(const char *str_in, char *str_out, int buf_len) { - char tag_param_buf[LML_TAG_PARAM_MAX_LEN + 1]; + char tag_param_buf[LML_TAG_PARAM_BUF_LEN]; char tag_output_buf[LML_TAG_OUTPUT_BUF_LEN]; int i; int j = 0; int k; int tag_start_pos = -1; int tag_end_pos = -1; - int tag_param_pos; + 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 (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, + (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 - 1) + { + log_error("Buffer is not longer enough for output string %d >= %d\n", j + tag_output_len, buf_len - 1); + 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, + lml_tag_quote_color[(lml_tag_quote_level) % LML_TAG_QUOTE_LEVEL_LOOP]); + if (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 - 1); + 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] == '\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; @@ -101,8 +242,9 @@ int lml_plain(const char *str_in, char * for (k = 0; k < LML_TAG_COUNT; k++) { - if (strncasecmp(LML_tag_name[k][0], str_in + tag_start_pos, (size_t)LML_tag_name_len[k]) == 0) + if (strncasecmp(LML_tag_def[k][0], str_in + tag_start_pos, (size_t)LML_tag_name_len[k]) == 0) { + tag_param_pos = -1; switch (str_in[tag_start_pos + LML_tag_name_len[k]]) { case ' ': @@ -111,13 +253,23 @@ int lml_plain(const char *str_in, char * { tag_param_pos++; } - if (tag_end_pos - tag_param_pos > 0) + strncpy(tag_param_buf, str_in + tag_param_pos, (size_t)MIN(tag_end_pos - tag_param_pos, LML_TAG_PARAM_BUF_LEN)); + tag_param_buf[MIN(tag_end_pos - tag_param_pos, LML_TAG_PARAM_BUF_LEN)] = '\0'; + case ']': + if (tag_param_pos == -1 && LML_tag_def[k][1] != NULL && LML_tag_def[k][2] != NULL) // Apply default param if not defined { - strncpy(tag_param_buf, str_in + tag_param_pos, (size_t)MIN(tag_end_pos - tag_param_pos, LML_TAG_PARAM_MAX_LEN)); - tag_param_buf[MIN(tag_end_pos - tag_param_pos, LML_TAG_PARAM_MAX_LEN)] = '\0'; + 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) + { + 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); } - case ']': - tag_output_len = snprintf(tag_output_buf, LML_TAG_OUTPUT_BUF_LEN, LML_tag_name[k][1], tag_param_buf); if (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 - 1); @@ -169,7 +321,20 @@ int lml_plain(const char *str_in, char * } } + if (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 - 1) + { + log_error("Buffer is not longer enough for output string %d >= %d\n", j + tag_output_len, buf_len - 1); + 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 +}