typsium:0.0.1 (#1635)

Co-authored-by: Ana Gelez <[email protected]>

packages/preview/typsium/0.0.1/LICENSE

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+MIT License
+
+Copyright (c) 2025 β-吲哚基丙氨酸
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

packages/preview/typsium/0.0.1/README.md

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+# Typst Chemical Formula Package
+
+A Typst package (alpha) for typesetting chemical formulas, supporting both inorganic and organic chemistry notation.
+
+## Features
+
+- Basic chemical formula typesetting
+- Ion charge notation
+- Physical state markers
+- Organic chemistry structures
+- Reaction arrows and equilibrium symbols
+- Special support for phenyl group (Ph)
+- Support for C(n) general formula expressions
+
+## License
+
+This project is licensed under the MIT License. See the [LICENSE](LICENSE) file for details.

packages/preview/typsium/0.0.1/lib.typ

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+/// Chemical formula typesetting package
+/// Version: 0.0.1
+
+// 修改预编译的正则表达式模式
+#let rx = regex("([A-Z][a-z]?)(?:\\(([A-Z][A-Za-z]+|[0-9]*n(?:[+-][0-9]+)*)\\))?([0-9]+)?(?:\\^\\(([0-9+-]+)\\))?(?:\\(([a-z]+)\\))?")
+
+// 新增有机化学正则表达式
+#let organic = (
+  // 基本结构 - 改进对Cn模式的支持
+  basic: regex("([A-Z][a-z]?)(?:\\(([A-Z][A-Za-z]+|[0-9]*n(?:[+-][0-9]+)*)\\))?([0-9]+|n)?(?:[A-Z][0-9]+)*"),
+  // 双键和三键
+  bonds: regex("(=|≡)"),
+  // 有机基团 (如 -CH3, -OH, -COOH 等)
+  groups: regex("\\-([A-Z][A-Za-z0-9]+)"),
+  // 取代基位置
+  position: regex("([0-9]+)\\-"),
+  // 苯环缩写
+  phenyl: regex("Ph"),
+)
+
+// 预定义连接符样式
+#let bond-styles = (
+  single: $minus$,  // 单键
+  double: $=$,      // 双键
+  triple: $≡$,      // 三键
+)
+
+/// 格式化化学式
+#let format(content) = {
+  // 基础替换规则
+  show "react": $arrow$
+  show "equilibrium": math.arrow.l.r
+  show "Delta": sym.Delta
+  show "+": $+$
+  show "-": bond-styles.single
+  show "=": bond-styles.double
+  show "≡": bond-styles.triple
+  show "Ph": "⌬"
+
+  // 有机化学特殊处理
+  show organic.groups: it => {
+    let group = it.text.slice(1)
+    h(0.15em) + $minus$ + h(0.1em) + $upright(#group)$ // 优化基团连接
+  }
+
+  show organic.position: it => {
+    let pos = it.text.slice(0,-1)
+    $upright(#pos)$ + h(0.1em) + $minus$ + h(0.15em) // 优化位置标记连接
+  }
+
+  // 修改统一的匹配与处理部分
+  show rx: it => {
+    let groups = it.text.match(rx)
+    if groups == none { return it }
+
+    let (base, group, num, charge, state) = groups.captures.slice(0)
+
+    let result = $upright(#base)$
+    if group != none { 
+      // 处理括号中的表达式
+      if group.contains("n") {
+        // 改进对数学表达式的处理
+        let expr = group
+          .replace("n+", "n plus ")  // 临时替换以避免与化学加号冲突
+          .replace("n-", "n minus ")
+        expr = $#expr.replace("plus", "+").replace("minus", "-")$
+        result = $#result _(#expr)$
+      } else {
+        result = $#result thin (#group)$
+      }
+    }
+    if num != none { 
+      // 特殊处理n的情况
+      if num == "n" {
+        result = $#result_n$
+      } else {
+        result = $#result _#num$
+      }
+    }
+    if charge != none { 
+      show "+": math.plus
+      show "-": math.minus
+      result = $#result^#charge$
+    }
+    if state != none {
+      // 修改状态标记显示方式
+      let pure_state = state.trim("()")
+      result = $#result _(#pure_state)$ // 使用双括号确保正确显示
+    }
+
+    result
+  }
+
+  $upright(#content)$
+}
+
+// 导出接口
+#let chemical = format

packages/preview/typsium/0.0.1/typst.toml

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+[package]
+name = "typsium"
+version = "0.0.1"
+license = "MIT"
+entrypoint = "lib.typ"
+authors = ["β-吲哚基丙氨酸"]
+description = "Typeset chemical formulas, both with inorganic and organic chemistry notation."